frequency beat频率差拍
frequencyn.频繁;频率
frequency multiplier chain倍频链
frequency of recombination重组频度
frequency-stepped signal步进调频信号
frequency-hopping signal跳频信号
frequency variation method频率稳定法
frequency selective device选频装置
frequency controlled speed变频调速
frequency detection module频率检测模块
frequency-scan technique频率扫描技术
frequency domain criterion频域判据