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IELTS BNC: 2406 COCA: 3009
frequency
noun /ˈfriːkwənsi/
singularfrequency
pluralfrequencies
  1. 1
    [U] the number of times that something happens during a period of time (某事发生的)频率
    frequency of :

    Changes in sea temperature will increase the frequency of hurricanes. 海水温度的变化会增加飓风的频率。

    with increasing frequency (=more often) 更加频繁地 :

    Accidents occur here with increasing frequency. 这里事故发生得越来越频繁。

     Synonyms and related words
    General words relating to frequency and duration: frequency, rate, irregularity...
    1. a.
      the number of instances of something (某种情况发生的)次数
      frequency of :

      We hope this treatment will reduce the frequency of heart disease. 我们希望这种治疗会减少心脏病的发病率。

      high/low frequency :

      Words with higher frequency are likely to have more complex behaviour. 使用频率更高的词汇可能具有更加复杂的变化。

       Synonyms and related words
      General words relating to frequency and duration: frequency, rate, irregularity...
    2. b.
      used for saying that something happens a lot 频繁

      We became suspicious of the frequency and size of his bank withdrawals. 我们对他从银行取款的次数之多、数额之大产生了怀疑。

       Synonyms and related words
      General words relating to frequency and duration: frequency, rate, irregularity...
  2. 2
    [C/U] physics the rate at which a sound wave, light wave, or radio wave vibrates (=moves up and down) (声波、光波或无线电波的)频率

    a frequency of 7.5 MHz 7.5兆赫的频率

     Synonyms and related words
    Television and radio waves: airwaves, frequency, hertz...
    1. a.
      the wavelength on which a radio programme is broadcast (广播节目播放的)波长
       Synonyms and related words
      Television and radio waves: airwaves, frequency, hertz...
  3. 3
    linguistics the number of times that a word or expression occurs, for example in a corpus

    an accessible text for young readers with many high-frequency words

     Synonyms and related words
     Synonyms and related words
    General words relating to frequency and duration: frequency, rate, irregularity...
IELTS BNC: 2406 COCA: 3009
frequency

noun¹

1rate at which sth happens發生頻率ADJECTIVE | VERB + FREQUENCY | PREPOSITION ADJECTIVEgreat高發率increased, increasing增高的/越來越高的頻率reduced降低的頻率estimated, expected估計的/期望的頻率different, same, similar不同的/相同的/相似的頻率relative相對發生率The relative frequency of this illness in the area is of concern to all doctors.所有的醫生都關注這種病在該地區相對頻繁的發生率。alarming令人擔心的頻率Bullets bounced off the rock with alarming frequency.子彈頻頻打在石頭上又彈射出去,令人心驚膽戰。VERB + FREQUENCYdecrease in, increase in頻率下降/上升These incidents have increased in frequency.這些事件的發生率上升了。decrease, increase, reduce降低/增加/減少頻率The drug can reduce the frequency and severity of attacks.這種藥能降低發病次數和嚴重程度。assess, calculate, compare, determine, estimate, measure, observe評估/計算/比較/決定/估計/測量/觀測頻率affect, change影響/改變頻率PREPOSITIONwith frequency以⋯的頻率Accidents of this sort are happening with increasing frequency.這類事故發生得越來越頻繁。
frequency

noun²

2of a wave波的頻率ADJECTIVE | FREQUENCY + NOUN ADJECTIVEhigh, low高頻;低頻microwave, radio, vibration, wave微波頻率;射(電)頻(率);振動頻率;波頻signal信號頻率FREQUENCY + NOUNrange, spectrum頻率範圍;頻譜band頻帶modulation頻率調制
IELTS BNC: 2406 COCA: 3009
frequency noun
channel

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