... two-frequency signal receiver 双频制信号接收机 two-frequency signal 双频信号 two-funneled 双烟囱的 ...
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双音多频信号 DTMF ; DTMF Dual-Tone Multifrequency Signaling ; Dual Tone Multi-Frequency ; Tone Multifrequency Signaling
双音双频信号 touch tone signal
双频制信号接收机 two-frequency signal receiver
双频顺序信号制 double-frequency sequence signalling system
双频制信号 two-frequency signalling
双线性调频信号 DLFM
双频发射信号 TX-PCN
双频功换信号 BANDSEL
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