frequency wow频率颤动
frequencyn.频繁;频率
frequency change频率变化
frequency sensor频率传感器
frequency bridge频率电桥
frequency of CTL细胞毒T细胞表达频率
frequency sample频率取样
frequency symbol频率符号
frequency system频率系统
frequency signal频率信号
frequency series次数数列
frequency modify频率修正