frequency lead频率导引
frequencyn.频繁;频率
frequency modulation phase modulation调频调相
Frequency-Modulated Continuous Wave调频等幅波
frequency multiplication phase-lock倍频锁相
Frequency-selective fading channels频率选择性衰落信道
frequency synthesizer including mixer含混频器的频率合成器
frequency divison multiplex telephony频分多路电话
Frequency Division Multiple Access LT频分多址
frequency modulated television system调频电视系统