supervisory control relay

例句：

1. 1.The supervisory control relay is used to monitor the system's performance.
   监督控制继电器用于监测系统的性能。
2. 2. The supervisory control relay was designed to improve safety and efficiency in the factory.
   监督控制继电器被设计用来提高工厂的安全性和效率。
3. 3. The supervisory control relay was responsible for monitoring the temperature of the furnace.
   监督控制继电器负责监测炉温。