frequency beat频率差拍
frequencyn.频繁;频率
frequency generator shaper频率发生器整形器
frequency changing circuit[电] 变频电路
frequency tuning thickness频率调谐厚度
frequency response of tape磁带频率响应
frequency modulation radar调频雷达
frequency density function频率密度函数
frequency band compression频带压缩
frequency modulation laser调频激光器