frequency top最高频率
frequencyn.频繁;频率
frequency multiplexing频率多路传输
frequency drive system频率驱动系统
frequency- converter变频器
Frequency of drug used用药频度
frequency spectrograph频谱仪
frequency hopping band跳频段
frequency interference频牢干扰
Frequency Line Tracker频率线路跟踪装置
Frequencyof Appearance出现频率
frequency hopping rate跳频速率