amplifying relay

例句：

1. 1.The amplifying relay is responsible for amplifying the signal from the sensor.
   放大继电器负责放大传感器的信号。
2. 2. The amplifying relay is used to amplify the audio signals in the audio system.
   放大继电器用于音频系统中的音频信号放大。
3. 3.The amplifying relay is an essential component of the communication system.
   放大继电器是通信系统的一个关键组件。