slow-speed relay

例句：

1. 1. The slow-speed relay is used to control the speed of the motor.
   慢速继电器用于控制电机的速度。
2. 2. In this circuit, the slow-speed relay is responsible for disconnecting the power supply when the circuit is faulty.
   在这个电路中，慢速继电器负责在电路出现故障时断开电源供应。
3. 3. The slow-speed relay is an essential component in many electrical systems, providing a safe and reliableway to control the flow of electricity.
   慢速继电器是许多电气系统中必不可少的组件，它提供了一个安全且可靠的方式来控制电力的流动。