单: singular number fate; destin ...频: frequent信: letter; mail令: order; command; decree单频信号: simple signal单频信号方式: uniwave signaling多频信令: multifrequency signalling单频信号发生器: single frequency signal generator; single-frequency signal generator多频信令系统: ssmf signaling system multi-frequency; ssmf signaling system, multi-frequency双音多频信令: dtmf dual tone multifrequecy signaling音频信令系统: vfss voice frequency signaling system单频: sonic frequency; unifrequency信令: signaling; signalling单频带: monoband; single band; single-band单频道: monorail单频的: monokinetic单频率: monofrequency; single frequency; unifrequency; unifrequent单频码: single-frequency code单频声: single frequency sound单频网: sfn single frequency network; single frequency network单频变换: single-frequency conversion单频拨号: one frequency dialing; single frequency dialing单频带，单波段: single-band单频带的: single band; singlebandd单频单工: single-frequency simplex
