frequency zone频率带
frequencyn.频繁;频率
frequency-modulated wave调频波
frequency demultiplication分频
frequency digtital counter频率数字计数器
frequency-scanning meter频率扫描仪
frequency domain transform频域变换
frequency shift signalling移频发信
frequency bias coefficient频率偏差系数
frequency division circuit分频电路
frequency directing device频率引导装置
Frequency speed regulation变频调速