What's the difference between industrial economics and technical economics? What are their contents? Which aspect of postgraduate entrance examination is better?

Hehe, let me tell you this. Industry and commerce are economy, technology and economy are not. They are interdisciplinary subjects of economics and management, pursuing economic feasibility and technical rationality. The main research directions of technical economics are technical and economic analysis, project management, value engineering and technological innovation. , so to test the economy, you have to do production and marketing ~ ~