signal mixer unit

例句：

1. 1. The engineer useda signal mixer unit to adjust thevolume of the audio signals.
   工程师使用信号混合单元来调整音频信号的音量。
2. 2.The signal mixer unit was designed toimprove the quality of the video signals.
   信号混合单元被设计用来提高视频信号的质量。
3. 3. The signal mixer unit was responsiblefor combining and filtering the different typesof signals.
   信号混合单元负责合并和过滤不同类型的信号。