manual tape relay

例句：

1. 1.The manual tape relay is used to control the speed of a motor.
   手动胶带继电器用于控制电机的速度。
2. 2. In this circuit, the manual tape relay is responsible for switching power from one source to another.
   在这个电路中，手动胶带继电器负责将电能从一个源切换到另一个源。
3. 3. The manual tape relay is an essential component in many industrial applications.
   手动胶带继电器是许多工业应用中不可或缺的组件。