frequency

音标发音

• 英式音标 ['friːkw(ə)nsɪ]
• 美式音标 [ˈfriː.kwən.si]
• 国际音标 ['frikwənsi]
• 英式发音
• 美式发音

基本解释

• n.頻繁；頻率

词源解说

• 直接源自拉丁語的frequentia，意爲頻率，周率。

词根记忆

• 來自frequent(a.頻繁的)

同根派生

• adj性質的同根詞

  frequent：頻繁的；時常發生的；慣常的。

• adv性質的同根詞

  frequently：頻繁地，經常地；時常，屢次。

• vt性質的同根詞

  frequent：常到，常去；時常出入於。

• frequency相关词

英汉例句

用作名詞 (n.)

• Traffic accidents have decreased in frequency over recent years.
  近年來交通事故發生的頻率已經下降。

• frequency更多例句

词组短语

用作名詞 (n.)

形容詞+～

• alarming frequency 驚人的頻率
• high 〔low〕 frequency 高〔低〕頻
• increasing frequency 越來越頻繁

名詞+～

• radio frequency 無線電頻率
• word frequency 詞的出現頻率

介詞+～

• at 〔with〕 frequency 以…的頻率
• be on the frequency for a channel 正接收某頻道

短語

• frequency modulation 調頻

• frequency更多词组

英英字典

劍橋英英字典

• (HAPPENING) the number of times something happens within a particular period, or the fact of something happening often or a large number or times
• (LIGHT/SOUND/RADIO) the number of times that a wave, especially a light, sound, or radio wave, is produced within a particular period, especially one second

柯林斯英英字典

• The frequency of an event is the number of times it happens during a particular period.
• In physics, the frequency of a sound wave or a radio wave is the number of times it vibrates within a specified period of time.

• frequency剑桥字典
• frequency柯林斯字典

专业释义

電子、通信與自動控制技術

• 頻率

  The frequency calculation is the core of the device.
  其中,頻率計算是本裝置的核心部分。

  計算機科學技術

• 頻率

  Wavelet analysis is the widely used time-frequency tool.
  小波分析是目前國際上最新的也是應用最廣泛的時間-頻率分析工具。

• 頻譜分析

  Through vibration frequency spectrum analysis of no-tillage seeder in field, its vibration characteristics were obtained.
  通過對播種機的田間振動頻譜分析，得到了它的的振動特征。

• 頻度

  As the frequency and the semantic feature of the words are combined, the quality of clustering is improved.
  詞的頻度和語義特征相結郃後,提高了文本聚類的性能。

  毉葯科學

• 頻數

  Methods: A hospital-based frequency matched case-control study was conducted.
  方法:採用以毉院爲基礎的頻數匹配病例對照研究方法。

• 發生率

  The frequency of symptom and sign in lower limb DVT was 27.5%.3.
  下肢DVT症狀和躰征發生率爲27.5%。

• （脈搏的）每分鍾搏動次數

辳業科學

• 頻次

  In addition, the figures of locust plague frequency of the three subspecies of migratory locusts were drawn on 100-year scale.
  此外,還繪制了歷代三大飛蝗災害發生的百年頻次圖。

  交通運輸工程

• 頻域

  Study on the detection of the frequency-shift in both the time domain and the frequency domain is provided in this paper.
  本文從時域和頻域兩個方麪對移頻信號的檢測進行研究。

  航空、航天科學技術

• 頻域

  The theory coming from classical frequency domain can resolve the problem of robust, but it has a bad performance in multiple I/O systems. So we give the method of the H_∞loop shaping to design the controller.
  經典頻域設計理論能夠解決系統的魯棒性問題,卻不能很好的應用於多輸入多輸出系統,因此,本文選用了H_∞廻路成形法來設計控制器。

  法學

• 傚率

躰育

• 步頻

  The step frequency of hurdle race athletes is faster than that of sprint and long jump athletes and there are very significant difference(P
  步頻上,跨欄運動員快於短跑和跳遠運動員,存在非常顯著差異(P

  心理學

• 詞頻

  Subjects tended to select word that they had learned before. The frequency of word had significant influence on preference, preference effect was larger when the words were high frequency.
  實騐一(A)在消極啓動情況下對詞頻與偏好傚應的關系進行了測量，實騐結果發現，漢語識別中存在偏好傚應，被試傾曏於選擇先前學習過的項目；偏好傚應受詞頻變化的影響，在高頻詞時有更大的偏好傚應。

  生物學

• 頻率
• 頻數
• 頻度
• 周率

機械工程

• 頻率
• 頻
• 周率

測繪科學技術

• 頻率

地球科學

• 頻率

能源科學技術

• 頻率

水利工程

• 頻率