frequency
音標(biāo)發(fā)音
- 英式音標(biāo) ['fri?kw(?)ns?]
- 美式音標(biāo) [?fri?.kw?n.si]
- 國際音標(biāo) ['frikw?nsi]
- 英式發(fā)音
- 美式發(fā)音
基本解釋
- n.頻繁；頻率
詞源解說
- 直接源自拉丁語的frequentia，意為頻率，周率。
詞根記憶
- 來自frequent(a.頻繁的)
同根派生
- adj性質(zhì)的同根詞
- frequent：頻繁的；時(shí)常發(fā)生的；慣常的。
- adv性質(zhì)的同根詞
- frequently：頻繁地，經(jīng)常地；時(shí)常，屢次。
- vt性質(zhì)的同根詞
- frequent：常到，常去；時(shí)常出入于。
英漢例句
- Traffic accidents have decreased in frequency over recent years.
近年來交通事故發(fā)生的頻率已經(jīng)下降。
用作名詞 (n.)
詞組短語
- alarming frequency 驚人的頻率
- high 〔low〕 frequency 高〔低〕頻
- increasing frequency 越來越頻繁
- radio frequency 無線電頻率
- word frequency 詞的出現(xiàn)頻率
- at 〔with〕 frequency 以…的頻率
- be on the frequency for a channel 正接收某頻道
- frequency modulation 調(diào)頻
用作名詞 (n.)
形容詞+～
名詞+～
介詞+～
短語
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
- 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.
劍橋英英字典
柯林斯英英字典
專業(yè)釋義
- 頻率
The frequency calculation is the core of the device.
其中,頻率計(jì)算是本裝置的核心部分。計(jì)算機(jī)科學(xué)技術(shù)
- 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(yīng)用最廣泛的時(shí)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(duì)播種機(jī)的田間振動(dòng)頻譜分析，得到了它的的振動(dòng)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(jié)合后,提高了文本聚類的性能。醫(yī)藥科學(xué)
- 頻數(shù)
Methods: A hospital-based frequency matched case-control study was conducted.
方法:采用以醫(yī)院為基礎(chǔ)的頻數(shù)匹配病例對(duì)照研究方法。 - 發(fā)生率
The frequency of symptom and sign in lower limb DVT was 27.5%.3.
下肢DVT癥狀和體征發(fā)生率為27.5%。 - （脈搏的）每分鐘搏動(dòng)次數(shù)
- 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(zāi)害發(fā)生的百年頻次圖。交通運(yùn)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(shí)域和頻域兩個(gè)方面對(duì)移頻信號(hào)的檢測(cè)進(jìn)行研究。航空、航天科學(xué)技術(shù)
- 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(jīng)典頻域設(shè)計(jì)理論能夠解決系統(tǒng)的魯棒性問題,卻不能很好的應(yīng)用于多輸入多輸出系統(tǒng),因此,本文選用了H_∞回路成形法來設(shè)計(jì)控制器。法學(xué)
- 效率
- 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(yùn)動(dòng)員快于短跑和跳遠(yuǎn)運(yùn)動(dòng)員,存在非常顯著差異(P心理學(xué)
- 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(shí)驗(yàn)一(A)在消極啟動(dòng)情況下對(duì)詞頻與偏好效應(yīng)的關(guān)系進(jìn)行了測(cè)量，實(shí)驗(yàn)結(jié)果發(fā)現(xiàn)，漢語識(shí)別中存在偏好效應(yīng)，被試傾向于選擇先前學(xué)習(xí)過的項(xiàng)目；偏好效應(yīng)受詞頻變化的影響，在高頻詞時(shí)有更大的偏好效應(yīng)。生物學(xué)
- 頻率
- 頻數(shù)
- 頻度
- 周率
- 頻率
- 頻
- 周率
- 頻率
- 頻率
- 頻率
- 頻率