n.频繁性；[数][物]频率，次数；频率分布； 变形： 复数：frequencies 双语释义：n.(名词)[U](某事发生可重复的)频率 rate of occurrence or repetition of sth[U]经常发生,频繁 fact of being frequent or happening often[C][U](声波或无线电波的)振动频率; 波段 rate at which a sound wave or radio wave vibrates; band or group of s