frequency

英['friːkwənsi]美['friːkwənsi]
  • n. 频繁；频率

    • 记忆方法

    词源记忆法
    来自frequent, 频繁的。用于语音学名词。
      noun(名词)
      1. [ C or U ] （事件发生的）频度，次数;频繁
      2. [ U ] （尤指声波或无线电波每秒振动的）频率
      3. [ C ] 频率（无线电信号的每秒电波数）

    双解例句

    noun(名词)
    1. [ C or U ] （事件发生的）频度，次数;频繁

      Complaints about the frequency of buses rose in the last year.

      去年对公车发车频率的投诉增长了。

      the increasing frequency of terrorist attacks

      越来越频繁的恐怖袭击

      It's not the duration of his absences from work so much as the frequency that worries me.

      与他的旷工时日相比，他旷工的频繁程度更让我担忧。

    2. [ U ] （尤指声波或无线电波每秒振动的）频率

      the frequency of light

      光的频率

      low frequency radiation

      低频辐射

      The human ear cannot hear very high-frequency sounds.

      人耳听不到极高频率的声音。

    3. [ C ] 频率（无线电信号的每秒电波数）

      Do you know what frequency the BBC World Service is on?

      你知道英国广播公司的广播频率是多少吗？

    小知识

    Frequency measures how often things repeat over time. City buses often reach stops at a frequency of every 15 minutes, unless it's snowing or raining really hard. In that case, the frequency will slow.

    You probably know the word frequent, a synonym for often. So, it is tempting to think frequency describes something that happens often. However, this isn't true: frequency describes any rate of time at which something repeats. For example, from Earth, Halley's Comet is visible at a frequency of 76 years — it's not frequent, but it is on schedule.

    实用短语

    1. frequency response

    2. frequency modulation

    3. frequency range

    4. very high frequency

      特高频,甚高频段,特高频率

    5. center frequency

    6. high frequency

    7. frequency deviation

    8. frequency divider

    9. frequency spectrum

    常用短语

    1. high frequency

      高频

    2. low frequency

      低频率；低周波

    3. frequency domain

      [化]频域；频率范围

    4. frequency conversion

      频率变换

    5. radio frequency

      无线电频率

    6. natural frequency

      自然频率，固有频率；本盏率

    7. frequency response

      频率响应；录放幅频响应

    8. frequency spectrum

      频谱；频率谱

    9. frequency converter

      变频器

    10. frequency band

      频带；频段

    11. video frequency

      视频率

    12. frequency control

      频率控制

    13. frequency division

      分频；频率划分

    14. frequency range

      频率范围

    15. vibration frequency

      频率；振动频率；波动频率

    16. frequency modulation

      调频

    17. intermediate frequency

      中频

    18. frequency division multiplexing

      频分复用；分频多路传输

    19. power frequency

      电力频率；工业频率

    20. resonance frequency

      共振频率；谐振频率；共鸣频率

    单词用法

    重要短语
    high frequency 高频
    low frequency 低频率；低周波
    frequency domain [化]频域；频率范围
    frequency conversion 频率变换
    radio frequency 无线电频率

    同根词

    词根：frequent

    adj.

    frequent频繁的；时常发生的；惯常的

    adv.

    frequently频繁地，经常地；时常，屡次

    vt.

    frequent常到，常去；时常出入于