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.频繁；频率

词源解说

• 直接源自拉丁语的frequentia，意为频率，周率。

词根记忆

• 来自frequent(a.频繁的)

同根派生

• adj性质的同根词

  frequent：频繁的；时常发生的；惯常的。

• adv性质的同根词

  frequently：频繁地，经常地；时常，屡次。

• vt性质的同根词

  frequent：常到，常去；时常出入于。

• frequency相关词

英汉例句

用作名词 (n.)

• 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。

• frequency更多例句

词组短语

用作名词 (n.)

形容词+～

• alarming frequency 惊人的频率
• high 〔low〕 frequency 高〔低〕频
• increasing frequency 越来越频繁

名词+～

• radio frequency 无线电频率
• word frequency 词的出现频率

介词+～

• at 〔with〕 frequency 以…的频率
• be on the frequency for a channel 正接收某频道

短语

• frequency modulation 调频

• frequency更多词组

英英字典

剑桥英英字典

• (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

电子、通信与自动控制技术

• 频率

  The frequency calculation is the core of the device.
  其中,频率计算是本装置的核心部分。

  计算机科学技术

• 频率

  Wavelet analysis is the widely used time-frequency tool.
  小波分析是目前国际上最新的也是应用最广泛的时间-频率分析工具。

• 频谱分析

  Through vibration frequency spectrum analysis of no-tillage seeder in field, its vibration characteristics were obtained.
  通过对播种机的田间振动频谱分析，得到了它的的振动特征。

• 频度

  As the frequency and the semantic feature of the words are combined, the quality of clustering is improved.
  词的频度和语义特征相结合后,提高了文本聚类的性能。

  医药科学

• 频数

  Methods: A hospital-based frequency matched case-control study was conducted.
  方法:采用以医院为基础的频数匹配病例对照研究方法。

• 发生率

  The frequency of symptom and sign in lower limb DVT was 27.5%.3.
  下肢DVT症状和体征发生率为27.5%。

• （脉搏的）每分钟搏动次数

农业科学

• 频次

  In addition, the figures of locust plague frequency of the three subspecies of migratory locusts were drawn on 100-year scale.
  此外,还绘制了历代三大飞蝗灾害发生的百年频次图。

  交通运输工程

• 频域

  Study on the detection of the frequency-shift in both the time domain and the frequency domain is provided in this paper.
  本文从时域和频域两个方面对移频信号的检测进行研究。

  航空、航天科学技术

• 频域

  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.
  经典频域设计理论能够解决系统的鲁棒性问题,却不能很好的应用于多输入多输出系统,因此,本文选用了H_∞回路成形法来设计控制器。

  法学

• 效率

体育

• 步频

  The step frequency of hurdle race athletes is faster than that of sprint and long jump athletes and there are very significant difference(P
  步频上,跨栏运动员快于短跑和跳远运动员,存在非常显著差异(P

  心理学

• 词频

  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.
  实验一(A)在消极启动情况下对词频与偏好效应的关系进行了测量，实验结果发现，汉语识别中存在偏好效应，被试倾向于选择先前学习过的项目；偏好效应受词频变化的影响，在高频词时有更大的偏好效应。

  生物学

• 频率
• 频数
• 频度
• 周率

机械工程

• 频率
• 频
• 周率

测绘科学技术

• 频率

地球科学

• 频率

能源科学技术

• 频率

水利工程

• 频率