释义 n.频率，频繁；频数 实用短语critical flicker frequence临界闪烁频率frequence converter变频器ultra-high frequence超高频variable-frequence governor变频调速器time & frequence时间与频率frequence and voltage control频率与电压设定radio frequence射频消融,射频,无线射频信号,的射频frequence response频率响应audio frequence range音频范围