frequency

英 [ˈfriː.kwən.si] 美 [ˈfriː.kwən.si]

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记忆方法

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将“frequency”拆分为“freq”和“uency”，联想“freq”像高频音乐，而“uency”是连续的“u”，像一串不断重复的音符。这样，你就可以将“frequency”记忆为“高频连续重复的频率”。

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词形变化与派生词，串起来记

词形变化

frequencies复数形式

派生词

frequent

frequency 频率

来自frequent, 频繁的。用于语音学名词。

frequency (n.): 1550s, "state of being crowded" (now obsolete); 1640s, "fact of occurring often;" from Latin frequentia "an assembling in great numbers, a crowding; crowd, multitude, throng," from frequentem (see frequent). Sense in physics, "rate of recurrence," especially of a vibration, is from 1831. In radio electronics, frequency modulation (1922, abbreviated F.M.) as a system of broadcasting is distinguished from amplitude modulation (or A.M.).

1. 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。

2. 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。

3. 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.

4. The drug can reduce the frequency and severity of attacks.: 这种药能降低发病次数和严重程度.

5. Fatal accidents have decreased in frequency over recent years.: 近年来死亡事故发生的频率已经下降.

frequency up conversion frequency of reference frequency of traffic frequency of trip frequency of vibration frequency of access frequency of back-up frequency of bud-variation frequency of calibration frequency of collision frequency of contact frequency of conversion frequency of dispatching frequency of encounter frequency of error frequency of flood frequency of freight frequency of heave frequency of injuries frequency of inspection frequency of irrigation frequency of joints frequency of light frequency of loss

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frequence

infrequency low-frequency