frequency

英 [ˈfriːkwənsi]

美 [ˈfriːkwənsi]

n.  发生率; 出现率; 重复率; 频繁; (声波或电磁波振动的)频率

复数：frequencies　

CET4CET6考研IELTSGRETEM4TEM8计算机

Collins.2 / BNC.2406 / COCA.3009

牛津词典

noun

• 发生率；出现率；重复率
  the rate at which sth happens or is repeated
  1. 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。
  2. 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
  3. 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。
• 频繁
  the fact of sth happening often
  1. the alarming frequency of computer errors
     计算机出错惊人的频繁
  2. 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。
• （声波或电磁波振动的）频率
  the rate at which a sound or electromagnetic wave vibrates (= moves up and down)
  1. a high/low frequency
     高 / 低频
• 频率（无线电信号每秒电波数）
  the number of radio waves for every second of a radio signal
  1. a frequency band
     频带
  2. There are only a limited number of broadcasting frequencies.
     只有数量有限的广播频率。

柯林斯词典

• N-UNCOUNT 频率;发生次数
  Thefrequencyof an event is the number of times it happens during a particular period.
  1. The frequency of Kara's phone calls increased rapidly...
     卡拉的电话飞速增多。
  2. 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, thefrequencyof a sound wave or a radio wave is the number of times it vibrates within a specified period of time.
  1. You can't hear waves of such a high frequency.
     如此高频率的声波是无法听到的。
  2. ...a frequency of 24 kilohertz.
     24 千赫的频率
  3. ...low frequency waves.
     低频波

英英释义

noun

• the number of observations in a given statistical category
  Synonym:absolute frequency
• the ratio of the number of observations in a statistical category to the total number of observations
  Synonym:relative frequency
• the number of occurrences within a given time period
  1. the frequency of modulation was 40 cycles per second
  2. the frequency of his seizures increased as he grew older
  Synonym:frequenceoftenness

双语例句

• Traffic accidents have decreased in frequency over recent years.
  近年来交通事故发生的频率已经下降。
• More complex methods such as frequency weighting and frequency normalization go beyond the scope of this article.
  更复杂的方法，比如频率加权和频率归一化，超出了本文范畴。
• But add to BB or changed body of human body, twinkle frequency is abnormal.
  但加到BB或变了身的人身上，闪烁频率就很异常了。
• It has a rather high transmission frequency and low attenuation.
  具有较高的传输频率和较低的衰减。
• Development trend of power supply for electrostatic precipitator is discussed according to the characteristics of high frequency power supply.
  文中根据高频电源的特点讨论了静电除尘器供电电源的发展趋势。
• It's common to think that the processor frequency determines performance.
  通常我们都认为是处理器的频率决定了性能的高低。
• A method for identifying the instantaneous frequency of a linear time-varying structure was proposed.
  提出了一种识别线性时变结构瞬时频率的方法。
• Sound waves, light waves, and radio waves have a certain frequency, or number of waves per second.
  声波、光波或无线电波等都有特定的频率，或者说是每秒的波数。
• The tanks broke down with increasing frequency.
  坦克越来越频繁地熄火。
• Accidents are happening with increasing frequency.
  事故频繁发生。