gang attenuator

例句：

1. 1. The gang attenuator is used to reduce the signal strength of a radio signal.
   群组衰减器用于降低无线电信号的信号强度。
2. 2.The gang attenuator was designed to improve the signal-to-noise ratio of the system.
   群组衰减器被设计用来提高系统的信噪比。
3. 3.The gang attenuator was used to filter out unwanted frequencies from the radio signal.
   群组衰减器被用来从无线电信号中滤除不需要的频率。