frequencyn.频繁;频率
frequency modulation tuner调频调谐器
frequency response plotter频率响应绘图仪
frequency character viewer频率特性观测仪
frequency sampling theorem频率抽样定理
frequency doubling circuit倍频电路
frequency difect repeating频率直接转发法
frequency selective switch频率选择开关
frequency spectrum monitor频谱监测