频率
近义词与同义词
按词义分组列出,使用时请结合具体语境。
the number of occurrences within a given time period; "the frequency of modulation was 40 cycles per second"; "the frequency of his seizures increased as he grew older"
基本解释
①单位时间内完成振动(或振荡)的次数。单位为赫兹。频率f和周期t互成倒数,即f=1t,t=1f。②在概率研究中,随机事件发生的次数与总试验次数之比值。一般情况下,常用随机事件的频率去估计该事件的概率。总试验次数越多,估计的偏差越小。