... signalling equipment 信号设备 signalling frequency 振铃频率 signalling in-band 带内振铃 ...
基于30个网页-相关网页
... 铃流导线 ringing lead 铃流频率 signalling frequency 铃流机 ringing machine ; generator ringing ...
基于20个网页-相关网页
signalling frequency shift 移频信号
signalling frequency exchange 频率交换信号
signalling tone peak frequency deviation 信令音峰值频偏
voice-frequency signalling 音频信号方式
frequency shift signalling 移频发讯号
single-frequency signalling [通信] 单频发信
multi-frequency code signalling 多频编码信号方式
suppressed frequency signalling system 频率压缩信号系统
two-frequency signalling 双频制信号
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