frequency wow频率颤动
frequencyn.频繁;频率
frequency control变频调速
frequency booster倍频器
frequency of auto自动输出频率
frequency of wink眨眼频率
frequency setting频率调整; 频率设定
frequency of pump泵频
frequency pattern频谱
frequency antenna频率天线
frequency theorem频率定理
frequency overlap频率重叠