unified electrical machine theory

例句：

1. 1. The theory of unified electrical machines is a fundamental concept in the field of electrical engineering.
   统一电气机器的理论是电气工程领域的基本概念。
2. 2. The development of unified electrical machines has greatly improved the efficiency of power systems.
   统一电气机器的发展大大提高了电力系统的效率。
3. 3. The unified electrical machine theory provides a new perspective for the designand optimization of electric motors.
   统一电气机器理论为电机的设计和优化提供了新的视角。