illustrate中文意思 frequency是什么意思 frequency的中文意思

frequency是什么意思 frequency的中文意思  

英音 ['fri:kwənsi] ;,美音 ['fri:kwənsi] ;,名词
1.[C,U]发生率，出现率，重复率
2.不可数名词：频繁
3.[C,U]频率,the ratio of the number of observations in a statisticAl category to the total number of observations,the number of observations in a given statistical category,the number of occurrences within a given time period,Alfven frequency 阿尔文频率,chopper frequency 遮光频率，间断频率，间歇频率,cold frequency 冷态频率,auroral frequency 极光频率,average frequency 调频中心频率,blanketing frequency 抑止频率,Bragg frequency 布拉格频率,broadcasting frequency 广播频率,absorption frequency 吸收频率,carrier frequency 载波频率，载频,frequency n. 1.[C,U]发生率，出现率，重复率2.[U]频繁3.[C,U]频率,low frequency a. 低周波的,dot frequency 短点频率,gyro frequency 旋转频率,hyper high frequency 超高频,reverse frequency 相反频率,ultra high frequency 【电】 超高频,frequency sampling 【计】 频率取样,radio frequency n.无线电频率,frequency changer 变频机,变频器