frequencyn.频繁;频率
frequency domain input-output system theory频域输入输出法
Frequency Modulation Multiplex Data Broadcast调频多工数据广播
frequency-multiplier and phase demodulation倍频鉴相
Frequency-quadrupled antireflection coating四倍频增透膜
frequency control of electric-machine speed变频调速
Frequency Infidelity of Bi-Linear Transform双线性变换中的频率失真
frequency-differential phase-shift keying频率微分相移键控
frequency division multiplex telegraph system频分复用电报制