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词汇 frequency
释义

frequency

noun
 
/ˈfriːkwənsi/
/ˈfriːkwənsi/
(plural frequencies)
  1.  
    [uncountable, countable] the rate at which something happens or is repeated发生率;出现率;重复率
    • 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。
    • Dawn was then visiting New York with increasing frequency. 道恩当时正在越来越频繁地访问纽约。
    • a society with a high/low frequency (= happening often/not very often) of stable marriages婚姻稳定率高/低的社会
    • Users will be able to rearrange their icons by frequency of use. 用户将能够根据使用频率重新排列他们的图标。
    • The program can show us word frequency (= how often words occur in a language).这个程序可给我们显示词频。
    • Crime increases in frequency in less settled neighbourhoods.居民少的地区犯罪率在升高。
    • 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。
    • These incidents have increased in frequency.这些事件的发生率上升了。
    Collocations Dictionaryadjective
    • great
    • increased
    • increasing
    verb + frequency
    • decrease in
    • increase in
    • decrease
    preposition
    • with frequency
  2.  
    [uncountable] the fact of something happening often频繁
    • the alarming frequency of computer errors计算机出错的情况惊人的多
    • The relative frequency of this illness in the area is of concern to all doctors.所有的医生都关注这种病在该地区相对频繁的发生率。
    • with… frequency Objects like this turn up at sales with surprising frequency.这样的东西在拍卖会上出人意料地频繁出现。
    • Bullets bounced off the rock with alarming frequency.子弹频频打在石头上又弹射出去,令人心惊胆战。
    Collocations Dictionaryadjective
    • great
    • increased
    • increasing
    verb + frequency
    • decrease in
    • increase in
    • decrease
    preposition
    • with frequency
  3. [countable, uncountable] (specialist) the rate at which a sound or electromagnetic wave vibrates (= moves up and down)(声波或电磁波振动的)频率
    • a high/low frequency高频;低频
    • Electromagnetic waves of radio frequency can make molecules vibrate and heat up.射频电磁波可以使分子振动升温。
    Wordfinder
    • amplitude
    • atom
    • energy
    • fission
    • force
    • frequency
    • gravity
    • molecule
    • nuclear
    • physics
    Topics Physics and chemistryc1
    Collocations Dictionaryadjective
    • high
    • low
    • microwave
    frequency + noun
    • range
    • spectrum
    • band
  4. [countable, uncountable] (specialist) the number of radio waves for every second of a radio signal频率(无线电信号每秒电波数)
    • a frequency band频带
    • an FM radio frequency调频无线电频率
    • There are only a limited number of broadcasting frequencies.广播频率的数量有限。
    Topics TV, radio and newsc1
    Collocations Dictionaryadjective
    • high
    • low
    • microwave
    frequency + noun
    • range
    • spectrum
    • band
  5. 词源mid 16th cent. (gradually superseding late Middle English frequence; originally denoting a gathering of people): from Latin frequentia, from frequens, frequent- ‘crowded, frequent’.
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