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frequencies是什么意思

frequencies

英['frɪkwənsɪz] 美['frɪkwənsɪz]

n. （某事发生可重复的）频率( frequency的名词复数 )，发生率，（声波或无线电波的）振动频率，经常发生；

柯林斯高阶英汉双解学习词典释义

N-UNCOUNT

频率;发生次数

The frequency of an event is the number of times it happens during a particular period.
例句
The frequency of Kara's phone calls increased rapidly... 卡拉的电话飞速增多。 The tanks broke down with increasing frequency. 坦克越来越频繁地熄火。
N-VAR

(声波或无线电波的)频率，周率

In physics, the frequency of a sound wave or a radio wave is the number of times it vibrates within a specified period of time.
例句
You can't hear waves of such a high frequency. 如此高频率的声波是无法听到的。 ...a frequency of 24 kilohertz. 24 千赫的频率

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