valve relay

例句：

1. 1. The valve relay is a critical component in the electrical system.
   阀门继电器是电气系统中的关键组件。
2. 2. The valve relay was designed to prevent overheating during operation.
   阀门继电器被设计来防止在运行过程中过热。
3. 3. The valve relay is responsible for controlling the flow of electricity through the circuit.
   阀门继电器负责控制通过电路的电流流动。