voice-frequency signalling的意思|示意
音频信号
voice-frequency signalling的网络常见释义
音频信号方式 ... voice-frequency circuit 音频电路 voice-frequency signalling 音频信号方式 voice-frequency ringing 声频振铃 ...
voice-frequency signalling相关短语
1、 voice frequency signalling current 音频振铃电流
2、 voice-frequency signalling current 音频信号电流
3、 voice frequency signalling system 音频信号传输系统