frequency top最高频率
frequencyn.频繁;频率
frequency - changer变频器
frequency integration频率积分
frequency of drug use用药频度
frequency fluctuation频率波动
frequency band energy频带能量
frequency spectrogram频谱图
frequency of training训练次数
frequency restriction频率限制
Frequency-selective频率选择性
frequency domain test频域测试