frequency beat频率差拍
frequencyn.频繁;频率
frequency selective fading频率选择性衰落
frequency assignment chart频率分配表
frequency dispersion curve频散曲线
frequency statistical tree频率统计树
frequency-shif telemeter[电] 移频遥测计
frequency-shift-domain降频域
frequency-time intensity频率-时间强度
frequency-modulated beam调频光束
frequency-field function频率场函数
frequency measuring bridge测频电桥