normal point control relay

例句：

1. 1. The normal pointcontrol relay is used to monitor the flow of power in a circuit.
   正常点控制继电器用于监控电路中电力的流动。
2. 2.The engineers used the normal point control relay to troubleshoot the faulty circuit.
   工程师们使用正常点控制继电器来诊断故障电路。
3. 3. The normal point control relay was designed to prevent overheating and ensure safe operation.
   正常点控制继电器被设计用来防止过热并确保安全运行。