汉字吧hanzi8.comfrequency的英语例句
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Their instruments detected very faint radiowaves at a frequency of 3 kilohertz.
他们的仪器检测到一个3千赫的微弱无线电波。
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If we can know their frequency we will monitor their talking.
如果我们知道他们的频率,我们就能监听他们的谈话.
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Fatal road accidents have decreased in frequency over recent years.
近年来致命交通事故发生率已经下降。