Kneeling for high marks: graduation internship report of electronic information engineering (or communication related) major, urgent!

One: Content

1. Introduction to internship as a whole.

2. Analysis of the content of the internship:

& lt 1 & gt； safety education

& lt2> Huawei visited and practiced.

& lt3> Fiberhome Science and Technology Visit Practice

& lt4> ZTE visited and practiced.

& lt5> Visiting practice of Huawei Wuhan Research Institute.

Personal gains and experiences in practice

& lt 1 & gt； A deep understanding of safety awareness

& lt2>'s understanding of discipline and collectivity

& lt3>'s understanding of the belief that hard work is not afraid of hardship.

& lt4>'s understanding of new China's industrial development.

& lt5>'s understanding of cities

3. Suggestions for improving internship.

& lt 1 & gt； Adjustment of internship time

The expansion of<2>'s practical methods

& lt3> Improvement of Accommodation Environment

Second, the internship content

The first part: The overall introduction of summer internship.

According to the teacher's teaching plan, on August 17, 2009, my classmates and I went to Shanghai Electric Machinery Factory for an internship. This internship is an indispensable and important experience in my college life. On the way to Shanghai Electric Machinery Factory, I was full of hope, hoping to enrich my life experience and increase my professional knowledge in this internship. After the internship, in retrospect, although it was a little hard for a short time, I did gain a lot of things that I couldn't learn before.

Our internship unit is Shanghai Electric Machinery Factory. Before going, the tutor had given us some introductions, but it was still a vague impression. After I really went, what I saw and heard, as well as the staff of Shanghai Electric Machinery Factory, gave us an introduction, and I finally had a clearer understanding of Shanghai Electric Machinery Factory.

As soon as I entered Shanghai Electric Machinery Factory, my first feeling was that this factory subverted my general impression of the factory. The factories I saw before were always very humble, and all I saw were empty venues and dilapidated factories, shocking noise and a gray sky. Shanghai Electric Machinery Factory has done a good job in greening. After entering the factory, it looks like a park with trees, flowers, lawns and green plants everywhere, and it is lush in midsummer. There is also a small lake with a stone bench with a gazebo, and the breeze blows, giving people a refreshing feeling. Even in the scorching sun, they don't feel hot. Behind the second door, there is a statue of Chairman Mao, which is very magnificent. I heard that this is the place where Chairman Mao used to inspect the meeting. There was nothing at the meeting that year, and a house was temporarily built as a conference hall. Compared with the current motor factory, it is really deeply touched. The most important thing is to admire the great people of China and be proud of the growing strength of our motherland. Going out from the outermost door of Shanghai Electric Machinery Factory is the famous Huangpu River. The river is vast, standing on the edge of the river is endless, with blue sky and white clouds overhead, which makes people open-minded.

Shanghai Electric Group Shanghai Electric Machine Factory Co., Ltd., Shanghai Power Station Equipment Co., Ltd. Generator Factory, Shanghai Power Station Equipment Co., Ltd. Steam Turbine Factory, etc. And other factories are affiliated to Shanghai Power Station Group. Our internship was mainly in Shanghai Electric Machinery Factory, and we also spent some time visiting other factories to get a general picture.

1. Shanghai Electric Group

Shanghai Electric Group Co., Ltd. (hereinafter referred to as Shanghai Electric) is the largest equipment manufacturing group in China. The history of Shanghai Electric can be traced back to 1880. Mixed ownership reform was carried out in March 2004, and it was listed in Hong Kong H shares in April 2005. * * * owns more than 60 core enterprises with net assets of about 2 1 1 100 million yuan and about 30,000 employees. Shanghai Electric has many industrial groups, such as power station, power transmission and distribution, heavy industry, rail transit, mechatronics, machine tools, environmental protection, elevators, printing machinery and so on. The company integrates engineering design, product development, equipment manufacturing and complete sets of engineering technical services, forming a core competitive advantage of complete sets of equipment, general contracting of projects and providing customers with modern comprehensive services. The company has more than 50 joint ventures such as Shanghai Electromechanical Co., Ltd. and Shanghai Mitsubishi Elevator Co., Ltd.

Shanghai Electric has produced a large number of products representing the national equipment industry level, and some products have filled the gaps at home and abroad. China's first 6,000 kW thermal power unit, the world's first dual-water internally cooled generator, China's largest10.2 million-ton hydraulic press, the world's first mirror grinder, China's first 300,000 kW nuclear power unit, China's first large marine crankshaft and China's first million-kilowatt ultra-supercritical thermal power unit are all from Shanghai Electric.

2. Shanghai Power Station Group

Shanghai Power Station Group is one of the largest and most powerful industrial groups in China's power station equipment manufacturing industry. It has more than 0.2 million employees, first-class human resources and first-class equipment resources, and quickly integrates into the world economy with first-class modern management and international operation. Since 2002, the production, sales and order volume of thermal power generation equipment have remained the first in the world.

3. Turbine Works of Shanghai Power Station Equipment Co., Ltd..

Established in 1953, Shanghai Power Plant Equipment Co., Ltd. is the first steam turbine factory in China. Covering an area of about 1 km2, the main equipment 1300 sets. There are about 3200 employees, including 20% engineers and technicians and 39.3% senior workers. SAIC mainly designs and manufactures thermal power turbines, nuclear power turbines and heavy gas turbines, and also produces marine turbines, fans and other power machinery. The domestic market share of products has reached more than 35%, and steam turbines have been exported to many countries in Southeast Asia. In the past 50 years, SAIC has manufactured the first 6000 kW steam turbine in China, the first imported 300,000 kW steam turbine, the first 3 1 10,000 kW nuclear power steam turbine and the first ultra-supercritical 1 10,000 kW steam turbine, creating many firsts in the history of steam turbine manufacturing in China.

4. Shanghai Electric Group Shanghai Electric Machinery Factory Co., Ltd..

Shanghai Electric Group Shanghai Electric Machine Factory Co., Ltd., formerly known as Shanghai Electric Machine Factory, was established in 1949 12 1. Since 1950s, it has become a key enterprise in the national motor manufacturing industry. After 50 years of development, Shanghai Electric Group Shanghai Motor Factory Co., Ltd. has become a comprehensive large-scale motor manufacturing enterprise with modern production scale, located in Minhang Industrial Zone, Shanghai, with a factory area of 1 square kilometer. Shanghai High-tech Enterprise, a civilized unit in Shanghai, won the Top Brand Products of Shanghai 100, the National May 1 Labor Award 196, the Special Safety Enterprise Unit 199 and Shanghai 200/KLOC for three consecutive years.

The company fully introduces advanced technology and develops cooperative production. For AC and DC motors, we introduced the manufacturing technology of large-scale asynchronous motors from Westinghouse, Switzerland's ABB, and Germany's Siemens. We also cooperated with Siemens, GE, Mitsubishi and other multinational companies in manufacturing, which greatly accelerated the upgrading of products, improved the quality and performance of products and enhanced market competitiveness.

The company has more than 3,000 main production equipments. The largest workshop is 3 12m long, with a main span of 36m and a height of 34m. Equipped with a crane with a lifting capacity of 400 tons, there is a 600-ton wharf on the water. It is equipped with waterway, railway and highway conditions for transporting overweight and super-large equipment, large and medium-sized CNC machining centers, large-scale digital punching and shearing centers, VPI vacuum pressure paint dipping equipment, CNC wire drawing machines, CNC wrapping robots and other equipment first applied in domestic motor manufacturing industry, and a manufacturing base of constant temperature dehumidification coil with an area of more than 8,000 square meters. At the same time, it also has all kinds of large-scale main equipment with modern processing level to ensure that it meets the requirements of motor manufacturing process. It is one of the enterprises with the most advanced equipment and the strongest processing capacity in the national motor industry.

After more than 50 years of precipitation, Shanghai Electric Machinery Factory has a rich corporate culture.

Corporate Mission: To provide high-quality products for the revitalization of China equipment manufacturing industry.

Corporate vision: First-class in China and internationally competitive.

Enterprise goal: to further consolidate the management foundation and cultivate the core competitiveness and sustainable development ability of enterprises with the requirements of surprise management and increase production; Closely combine imported technology with independent innovation to comprehensively enhance the industry leading ability; Narrow the gap with international competitors, make breakthroughs in new industries and fields, occupy the commanding heights of the domestic market, go abroad and compete with international competitors on the same stage.

Corporate values: create a win-win situation with users and create happiness with employees.

Seize the important strategic opportunity, maintain the sustainable development of the enterprise, vigorously build an honest enterprise, carefully cultivate the whole enterprise culture, strive to embody the same value, stare at employees, unite employees, and provide a steady stream of power for the world with brand-new ideas, systems, technologies, equipment and looks.

The company's main products are: turbine generators, large and medium-sized AC motors and generators, DC motors and generators, wind turbines and so on. Products are widely used in power station, metallurgy, water conservancy, petrochemical, mining, machinery, shipbuilding, scientific research, transportation, cement, paper making, sugar making, textile, environmental protection, municipal, military, wind power and other industries. The turbine generators produced by this company account for more than one third of the thermal power units in China. Large and medium-sized AC and DC motors account for one-third of the national motor industry. No matter the scale of production and operation, market share or comprehensive economic benefits, it ranks among the best in the national motor industry, and its products are exported to more than 30 countries and regions around the world.

The company has continuously strengthened fine management and lean production, implemented modern management technologies such as total quality management, target management, value engineering, LOA authority policy, information management and 5S management, and established a guarantee system for quality, material consumption, efficiency and safety. And become the ISO 900/KOOC-0/:2000 (quality), ISO/KOOC-0/400/KOOC-0/:KOOC-0/996 (environmental management), GB/T2800/KOOC-0/-200/KOOC-of the national motor manufacturing enterprises.

In the rapid and healthy development, the company will, as always, aim at first-class products, first-class technology, first-class management and first-class service, and make more and more contributions to the development of China equipment manufacturing industry.

At present, the leading products of domestic electric machinery factories are:

1. The domestic leading 90 million 20-pole increased safety brushless excitation synchronous motor was put into trial operation.

2. The domestic leading 70 million 80-pole largest vertical synchronous motor runs in Zaohe Pumping Station in Jiangsu.

3. The domestic leading120 million 8-pole variable frequency synchronous motor runs in Qingshan Holding Group Company.

4. China's leading megawatt wind turbine runs in Shandong Luneng Group.

5. The 25,000 kW four-pole asynchronous motor with the largest single machine capacity in China runs in Liuzhou Iron and Steel Company, Guangxi.

6. The largest 15000 kW 52-pole synchronous diesel generator in China runs in Kunshan Bacheng Peak Regulation Power Plant.

7. The 7500 kW 16-pole variable frequency synchronous motor with the largest output torque in China runs in Shougang.

8. China's largest 5750kW DC motor runs in Baoshan Iron and Steel Company.

Part II: Analysis of the theme content.

& lt 1 & gt； safety education

Eight rights of employees' safety production guarantee

1, the right to know, that is, the right to know the risk factors, preventive measures and emergency measures in their workplaces and workplaces; 2, the right to suggest, that is, the right to put forward suggestions on the safety production work of this unit; 3. The right to criticize, report and accuse, that is, the right to criticize, report and accuse the problems existing in the safety production management of the unit; 4, the right to refuse, that is, the right to refuse illegal operation command and force risky operation; 5. Emergency avoidance right, that is, the right to stop operation or evacuate the workplace after taking possible emergency measures when an emergency that directly endangers personal safety is discovered; 6. The right to claim compensation from the unit according to law; 7. The right to obtain labor protection articles that meet national standards or industry standards; 8. The right to receive safety education and training.

Three obligations of employees' safety production guarantee

1, the obligation of self-discipline and law-abiding. In the course of operation, employees shall abide by the safety production rules and regulations and operating procedures of their own units, obey management, and wear and use labor protection articles correctly; 2. Accept the education and training of safety production, consciously learn the obligation of safety production knowledge, master the knowledge of safety production required by the post, improve the skills of safety production, and enhance the ability of accident prevention and emergency handling; 3. Hidden danger reporting obligation, that is, when hidden dangers of accidents or other unsafe factors are discovered, it shall immediately report to the on-site safety production management personnel or the person in charge of the unit.

& lt2> Shanghai Electric Machine Factory (large electric machine factory, medium-sized electric machine factory, shearing and stamping factory, high-speed electric machine factory, coil factory)

The coil is the core component of the motor, and the condition of the coil affects the performance of the whole motor. In this internship, a person in charge of the coil factory not only gave us a lesson, but also introduced different coils in different motors in detail, and took us to the factory to observe and learn the manufacturing process of coils.

The manufacturing technology of concentric compensation winding, commutation pole coil, synchronous motor pole coil, AC stator coil and YR rotor coil is also studied and understood in detail. The manufacturing methods of various coils are similar and have their own characteristics.

Out of the coil factory, I went to the DC motor factory.

I saw large-scale lifting equipment for the first time in DC Motor Factory, and I had a deep understanding of safety awareness.

DC motors are mainly used for brake steel motors (ZD series, Z900 series, Z7 10 series), crane motors (ZKTD series) and special motors. There are two main press-fitting methods of DC motor stator core: internal pressure fitting and external pressure fitting, and internal pressure fitting is also commonly used. There are three main materials used in DC motors: magnetic conductive materials, conductive materials and insulating materials.

In the shearing and punching factory, we learned the stamping process:

Stamping is a production technology that makes the sheet material directly subjected to deformation force in the die with the help of the power of conventional or special stamping equipment, so as to obtain product parts with certain shape, size and performance. Sheet metal, die and equipment are the three elements of stamping. Stamping is a cold deformation processing method of metal. Therefore, it is called cold stamping or sheet metal stamping for short. It is one of the main methods of metal plastic working (or pressure working) and also belongs to material forming engineering technology.

Stamping is mainly classified according to process, which can be divided into two categories: separation process and forming process. The separation process, also known as blanking, aims to separate the stamping parts from the sheet along a certain contour line and ensure the quality requirements of the separated section. The purpose of forming process is to make the sheet metal plastically deform and make the workpiece have the required shape and size without destroying the blank. In actual production, a workpiece often goes through multiple processes. Stamping, bending, shearing, stretching, bulging, spinning and straightening are the main stamping processes.

The surface and internal properties of stamping sheet have great influence on the quality of stamping products, and the thickness of stamping material is required to be accurate and uniform. Smooth surface, no spots, scars, scratches and surface cracks; Uniform yield strength, no obvious directionality; High uniform elongation; Low output rate; Low work hardening.

In actual production, process tests similar to stamping process, such as drawing performance test and bulging performance test, are often used to check the stamping performance of materials to ensure the quality of finished products and high qualified rate. The precision and structure of the finished die directly affect the forming and precision of stamping parts. Die manufacturing cost and life span are important factors affecting the cost and quality of stamping parts. Mold design and manufacture need more time, which prolongs the production preparation time of new stamping parts.

The standardization of die frame, die frame and guide rail, the development of simple die (small batch production), compound die and multi-station progressive die (large batch production) and the development of rapid die changing device can reduce the preparation workload and shorten the preparation time of stamping production, so that advanced stamping technology suitable for large batch production can be reasonably applied to small batch and multi-variety production.

In addition to forming thick plates with hydraulic press, stamping equipment generally adopts mechanical press. With modern high-speed multi-station mechanical press as the center, it is equipped with unwinding, leveling, finished product collection, transportation and other machinery, as well as a mold base library and a quick mold changing device. Through computer program control, an automatic stamping production line with high productivity can be formed.

In the case of producing dozens or hundreds of stamping parts per minute, people, equipment and quality accidents often occur when feeding, stamping and discharging processes are completed in a short time. Therefore, stamping safety production is a very important issue.

& lt3> Visiting practice of Shanghai Electric Heavy Machine Tool Plant.

Shanghai Heavy Machine Tool Factory Co., Ltd. (formerly Shanghai Heavy Machine Tool Factory) was founded in 1959, located in Minhang Industrial Zone in the southwest of Shanghai, and is one of the major manufacturers of heavy machine tools in China. The factory covers an area of 1 1. 1000 square meters, with a building area of 59,800 square meters, including more than 3,200 square meters of air conditioning assembly workshop.

At the beginning of the factory, the factory carried forward the spirit of "ants gnawing at bones" and created the miracle of successful trial production of "four meters five" vertical lathe in just 47 days. Shanghai Mayor Cao Diqiu and other leaders came to the factory to congratulate, and People's Daily 1959 reported to the whole country that the first largest vertical lathe in China was successfully trial-produced. 1966 and 198 1 year, jointly designed and produced the first 500-ton hydraulic secondary standard dynamometer in China and the first 20-meganewton (2,000-ton force) bidirectional dynamometer in the world, which filled the blank of national standard dynamometer. In 1970s and 1980s, the factory began to manufacture HO-002 long honing and spinning milling machine and YT-0 1 large six-component balance to process anti-aircraft guns and submarine periscope barrel parts, which contributed to the successful launch of space launch vehicles and the growth of national defense industry, and was affirmed and encouraged by the Central Committee, the State Council and the Central Military Commission.

Since 1980s, this factory has taken the lead in cooperating with foreign manufacturers to produce machine tools. Cooperate with Germany, America, Italy, Japan and other developed countries to produce high-tech products such as precision lathes, gantry guideway grinders and vertical machining centers. Through the digestion and absorption of imported technology, the technical level of new product development with independent intellectual property rights in the factory has been improved, the competitiveness of large-scale CNC horizontal lathes and CNC gantry guideway grinders in the domestic market has been enhanced, the market position of factory products has been established, and users' trust in factory products has been won.

The factory mainly produces C6 1 100 ordinary horizontal lathes, deep hole boring and boring machines, gantry planers and gantry grinders with a diameter of about 1 m.. Since 1980s, the factory has developed CK and CKQ series CNC lathes through introduction and cooperation. MK series CNC gantry guideway grinder and its derivatives, XK series CNC gantry milling machine, SLZ series manual cycle CNC lathe and V, W and C series horizontal lathe, as well as roller lathe, vertical turning center and other products. The products of this factory have won many awards and honors from the city and ministries. Among them, cv 61100 (v1000) lathe won the national excellent gold medal, MK52 100 gantry grinder won the third prize of national scientific and technological progress, the second prize of Shanghai scientific and technological progress, MK5220 won the first prize of Shanghai scientific and technological progress, 20MN. CK6 1 125, CKQ6 1 100 CNC lathe and MK8960 CNC corrugated roller grinder won the third prize of Shanghai Excellent New Product, while SHZ 1044 Turning Center won the second prize of national key new product, scientific and technological progress of machinery industry and the third prize of Shanghai Excellent New Product.

The factory provides important equipment for aerospace, national defense, shipbuilding, metallurgy, light industry machinery, machinery manufacturing and other industries. The products of this factory have been imported instead of some similar products and exported to developed countries such as Germany, Italy, Japan and the United States.

In March, 2006, the factory completed major mechanism reform and asset personnel integration, and was affiliated to Shanghai Electric Group Co., Ltd. (HK2727). Under the new historical opportunity, the factory continues to carry forward the enterprise spirit of "unity and cooperation, keeping promises" and meets challenges with a brand-new look.

& lt4> Visiting Practice of Shanghai Generator Factory

The generator factory of Shanghai Power Station Equipment Co., Ltd. belongs to the Power Station Group of Shanghai Electric Group Co., Ltd., which is a joint venture invested by Siemens of Germany and established in199565438+February. The factory combines the mature experience of Shanghai Electric Machinery Factory in manufacturing turbogenerators for more than 40 years with the advanced technology and management experience of Siemens, and has established a leading position in the turbogenerator industry.

The main building of the workshop is 312m long, 36m wide and 34m high, with a lifting capacity of 500 tons. It has more than 780 sets of all kinds of equipment, among which the key equipment is mainly imported from major foreign companies, and it has the ability to process the quadrupole nuclear power generator with the largest capacity in the world-1.800 MW, with an annual production capacity of 30 million kilowatts.

With the goal of being world-class, the factory has continuously increased investment in science and technology, paid attention to independent innovation and Industry-University-Research cooperation, and innovated the personnel training mechanism, thus forming a technological innovation system with academicians of the Chinese Academy of Sciences and enterprise postdoctoral workstations as the main body. On the basis of the world's first dual-water internally cooled generator technology with independent intellectual property rights, the world-class generator technology imported from Siemens was further digested, absorbed and innovated. A complete series of products, such as 30-200mw air cooling, 50-340mw double water internal cooling, 200- 1000MW water hydrogen cooling and 200~350MW total hydrogen cooling, have been formed. Historical breakthroughs have been achieved in major projects such as ultra-supercritical 1000MW thermal power, nuclear power and gas turbine generator, and a series of technical achievements have been obtained. It has won the first prize of national and Shanghai scientific and technological progress, national key new products, Shanghai famous brand products and other honorary titles for many times, and has been exported to Pakistan, Iran, India, Bangladesh, Vietnam and other countries. At the same time, products such as 1800MW nuclear power generator and 1200MW thermal power generator with the largest capacity in the world are being developed to form new generator core technologies and continuously improve the core competitiveness of enterprises.

In terms of safety, China has the Labor Contract Law, the Work Safety Law and the Industrial Injury Insurance Regulations, which are used to restrain some basic codes of conduct in factories and ensure work safety.

However, laws alone cannot completely avoid all unsafe accidents. Unsafe accidents often occur in factories. Why? The teacher's analysis is very reasonable, and the ability to identify dangerous sources is not enough. People tend to ignore the hazards around them. There are two reasons for the accident: one is the unsafe state of the object. The second is people's unsafe behavior. Some dangers can be avoided. By overhauling things and strengthening our own safety awareness, many accidents can be avoided. There are still many dangers that are inevitable, but these inevitable dangers are indirectly caused by management defects. There have been many unsafe accidents in the past, but these bloody lessons have not completely awakened every worker and completely avoided unsafe accidents.

After an unsafe accident, there are usually three reasons: first, the operation is wrong and the machine is not operated according to the operation process. The second is to ignore safety, often forgetting that the factory is a specific environment because of the habits in life, and coveting convenience leads to a big mistake. The third is to ignore warnings and ignore the opinions put forward by others.

In factories, impact machines, shears and cranes are particularly dangerous. Pay special attention when operating these machines, concentrate, pay attention to other people's signals, and get out of the way when you hear the bell and see the crane.

Safety really comes first. Only when you are in good health can you study hard and work hard, because some small mistakes lead to great disasters. This is very sighing. When doing any work, especially when there are dangerous sources, we must really understand the work situation, so as to avoid dangerous places in the work, ensure our own safety and complete our tasks.

My understanding of factory discipline is also my gain. In the workshop, I saw that a product can not be completed by a simple person, but needs the joint efforts of all people in Qixin. In a collective, we must have discipline and abide by everyone's agreements and plans. We can't do it if we want to, or if we don't want to. We are used to being lazy at school, so we should exercise ourselves consciously and have discipline in senior three.

Shanghai Electric Machinery Factory has experienced many hardships and bumps from a small factory in the early days of the founding of the People's Republic to such a scale today. However, our predecessors never gave up, and they were not afraid. As long as they are willing to work hard and study hard, we can create world-leading technology without making excellent motors. This belief is also worth thinking about and learning. It has such a quality that it is not afraid of difficulties and hardships. No matter what work you do, you can do it well, be satisfied and benefit the society.

Shanghai Electric Machinery Factory is now one of the three largest electric machinery factories in China, and its development history also represents the development history of new China industry. Through this window, we can see how our motherland is becoming stronger and stronger. Through the continuous efforts of several generations, our motherland will become stronger and stronger. We should inherit this excellent tradition and never forget the course and direction of our predecessors' struggle. If we persist, our motherland will surely become stronger.

The fourth part: Suggestions for the improvement of internship.

For the whole internship, the short time is a great pity. There are still many mysterious places in Shanghai for me. I look forward to lifting her veil. Motor knowledge is like the ocean. My knowledge at school is far from meeting the needs of production. There is still a lot of motor knowledge and motor production process waiting for me to learn and learn from. I really hope to spend more time, learn more about Shanghai and learn more about electric machinery.

On the other hand, in practice, I really want to start work and make a coil myself. Knowing it can't completely satisfy my curiosity. I really want to try to finish one. It would be better if we could add a link that we can do together with the master in the future practice.

The only bad thing is that the accommodation is really unsatisfactory ... I look forward to improvement in the future. ...

Three. Overall review of internship

Looking back on this internship, it is very memorable. In this internship, I applied what I learned to practical work, so that my theoretical knowledge would not be empty. Theory and practice are inseparable. In practice, my knowledge has been consolidated and my ability to solve problems has been tempered. This internship not only broadened my horizons, but also enhanced my ability to be a man. In this internship, I have a comprehensive understanding of the working object and working environment of electrical engineering and automation specialty in engineering practice, from the whole production process of products to the performance indicators of products and the parameter requirements of production design. While consolidating professional knowledge and increasing the sense of industry responsibility, we have a brand-new understanding of the motor field and a qualitative understanding of our electrical workers. This internship is neither long nor short, but it has benefited a lot. During this period, we deepened our friendship with our classmates and exercised our team spirit.