frequency zone频率带
frequencyn.频繁;频率
frequency conversion drive变频传动
frequency diversity radars频率分集雷达
frequency control of motor变频调速
frequency of recirculation回灌频率
frequency domain synthesis频率域综合
frequency modulated signal调频信号
Frequency Allocation Panel频率分配小组委员会
frequency offset correction频偏校正
frequency-derived channel频率分割信道
frequency induction furnace工频炉