frequency是什么意思
網(wǎng)絡(luò)釋義：頻率；頻；黑洞頻率；頻率的
frequency怎么讀（音標(biāo)發(fā)音）
復(fù)數(shù)：frequencies ?
frequency例句及用法
1 . Their instruments detected very faint radiowaves at a frequency of 3 kilohertz.
他們的儀器檢測(cè)到一個(gè)3千赫的微弱無線電波。
2 . Fatal road accidents have decreased in frequency over recent years.
近年來致命交通事故發(fā)生率已經(jīng)下降。
來自《權(quán)威詞典》
3 . If we can know their frequency we will monitor their talking.
如果我們知道他們的頻率,我們就能監(jiān)聽他們的談話.
來自《簡(jiǎn)明英漢詞典》
4 . The drug can reduce the frequency and severity of attacks.
這種藥能降低發(fā)病次數(shù)和嚴(yán)重程度.
來自《簡(jiǎn)明英漢詞典》
5 . Fatal accidents have decreased in frequency over recent years.
近年來死亡事故發(fā)生的頻率已經(jīng)下降.
來自《簡(jiǎn)明英漢詞典》
2.the ratio of the number of observations in a statistical category to the total number of observations
3.the number of observations in a given statistical category
1.訓(xùn)練的次數(shù)
1.頻度
1.頻數(shù)
1.①次數(shù)：每一單位時(shí)間內(nèi)，一個(gè)周期過程中重復(fù)發(fā)生的次數(shù)，例如，粒子每秒鐘振動(dòng)的次數(shù)或完整波每秒鐘重復(fù)的次數(shù)(周波數(shù))
2.②頻率：特定事件發(fā)生的次數(shù)或歸于某特定范疇的人口數(shù)或統(tǒng)計(jì)樣本數(shù)
3.③相對(duì)頻率：在許多重復(fù)試驗(yàn)中，特定事件發(fā)生的平均數(shù)
1.頻率
1.頻率
1.頻度
1.鎖頻
2. frequency-locking
1.頻度
2. 群落中某種植物出現(xiàn)的樣方數(shù)占整個(gè)樣方數(shù)的百分比。
1.變頻調(diào)速
2. ［speed］ control
3. 頻敏變阻器
4. frequency-sensitive rheostat
1 . 頻率
...高頻低頻,它指頻率,frequency,的高低,不過一般而言是指物理上的各種振蕩,其中電學(xué)里面有很多振蕩,可能是電流,質(zhì)點(diǎn),mass po.
2 . 頻
effect of nonlinear amplifier on frequencyhopping multiple access systems ., 非線性放大器對(duì)跳頻多重進(jìn)接系統(tǒng)之影響.
3 . 黑洞頻率
創(chuàng)意水源的良性循環(huán)_10堂量子創(chuàng)意課-265小說書... ... 【電影MOVIE】 ?《黑洞頻率》（Frequency） ?《居家男人》（TheFamilyMan）.
4 . 頻率的
frequency雷擊, frequency頻率的, frequency頻率電壓
frequency相關(guān)短語搭配
1 . 零頻率
Moza larva community type is analysed as the crowding degree inverse zero frequency zero frequency method .應(yīng)用聚集度指標(biāo)法、回歸分析法、零頻率方法對(duì)兩色綠刺蛾幼蟲在毛竹林間的分布型進(jìn)行測(cè)定。
1 . 頻段的
a experiment study on the variations in ultra-low frequency ( ULF ) field and self-potential during rock cracking was carried out in a field-free space .在零磁空間對(duì)超低頻段的磁場(chǎng)和自電位的變化進(jìn)行了巖石破裂的實(shí)驗(yàn)研究，細(xì)致地揭示出電場(chǎng)、磁場(chǎng)出現(xiàn)異常變化的全過程，對(duì)深入認(rèn)識(shí)超低頻電磁信號(hào)的微觀機(jī)理具有重要的意義。
1 . 頻率和基因頻率
The antigen frequency and gene frequency were calculated by direct counting ., 用直接計(jì)數(shù)法進(jìn)行抗原頻率和基因頻率計(jì)算.
1 . 頻網(wǎng)
shortwave non - orthodox frequency - hopped signal selection by improved time correlation arithmetic is introduced .介紹了利用改進(jìn)型的時(shí)間相關(guān)算法進(jìn)行短波非正交跳頻網(wǎng)臺(tái)信號(hào)分選的方法.