counter-electromotive force relay

例句：

1. 1.The counter-electromotive force relay is used to control the flow of electricity in a circuit.
   反电动势继电器用于控制电路中电流的流动。
2. 2. The counter-electromotive force relay is essential for maintaining safe electrical connections.
   反电动势继电器对于保持安全电气连接至关重要。
3. 3.The counter-electromotive force relay was designed to improve efficiency and reduce energy waste in power systems.
   反电动势继电器被设计用来提高系统效率并减少能源浪费。