多路音频电报制
multi-channel vioce frequency telegraphy
音频多路电报术
voice-frequency-multichannel telegraphy
多音频电报终端机
multi audio telegraph terminal
调频音频电报
FMVFT Frequency Modulated Voice Frequency Telegraph
modulation
frequency VFT
移频音频电报
FSVFT Frequency Shift Voice Frequency Telegraph
电报多路复用器
TELEMUX TELEgraph MUltipleXer
多路音频数据接入板
Multi-channel Voice Data Access Card
多频多路技术
frequency multiplexing technique
音频多路系统
voice-frequency-multichannel system
音频多路制
voice-frequency-multichannel system
复式幻通平衡电报电路
circuit
double phantom balanced telegraph