pole-change motor starter

例句：

1. 1.The pole-change motor starter is a crucial component in the power system.
   电枢改变电机启动器是电力系统中至关重要的组成部分。
2. 2.The pole-change motor starter was designed to improve efficiency and reduce maintenance costs.
   电枢改变电机启动器被设计用来提高效率和减少维护成本。
3. 3. The pole-change motor starter is used to start the engine when the fuel tank is empty.
   当燃料箱为空时，使用电枢改变电机启动器来启动发动机。