selective differential relay

例句：

1. 1.In the design of amplifiers, selective differential relays are used to improve signal-to-noise ratio.
   在放大器的设计中，选择性差分继电器被用来提高信号与噪声的比。
2. 2.The selective differential relay was designed to detect and isolate faults in the electrical system.
   选择性差分继电器被设计来检测并隔离电气系统中的故障。
3. 3. The selective differential relay was used to monitor the temperature of the furnace during operation.
   选择性差分继电器被用来监测炉子在运行过程中的温度。