单: singular number fate; destin ...频率: frequency; rate进: advance; move forward; move ...近: near; close多频率进行: multifrequency operation单频率: monofrequency; single frequency; unifrequency; unifrequent单频率的: monofrequent; unifrequent单频率接收机: single frequency receiver单频率输出口: single frequency outlet序列单频率码: sequential single frequency code进近管制频率: approach frequency单频率信号发生器: single-frequency signal generator单频率音调补偿器: presence and absence equalizer单频: sonic frequency; unifrequency进近: aerodrome approach; airfield approach; apapproach; apch approach; apchg approaching; appr approach单频带: monoband; single band; single-band单频道: monorail单频的: monokinetic单频码: single-frequency code单频声: single frequency sound单频网: sfn single frequency network; single frequency network进近灯: a approach lighting; apl approach light; approach lighting facility进近端: approach end进近角: aa approach angle进近口: approach gate
