frequency top最高频率frequencyn.频繁；频率frequency transformer变频器频率变换器frequency of sampling采样频率frequency using ratio频谱利用率frequency compensator频率补偿器Frequency Mixer Stage混频级frequency - divider分频器frequency recognition频率识别frequency interlacing频率交错,频谱交错frequency programming频率程序设计frequency shif coding[电] 频移编码

1. This relation between the frequency and the field spectra was noted experimentally.
   实验上已经发现频率和场频谱之间的这种关系。
2. Combining the cepstrum method could identify the characteristic frequency availably.
   结合倒频谱方法可以有效地识别故障特征频率。