| 单词 | frequency |
| 释义 | frequency noun¹ 1rate at which sth happens发生频率adjective | verb + frequency | preposition adjective➤great高发率▸➤increased, increasing增高的／越来越高的频率➤reduced降低的频率➤estimated, expected估计的／期望的频率➤different, same, similar不同的／相同的／相似的频率▸➤relative相对发生率◆the relative frequency of this illness in the area is of concern to all doctors.所有的医生都关注这种病在该地区相对频繁的发生率。➤alarming令人担心的频率◆bullets bounced off the rock with alarming frequency.子弹频频打在石头上又弹射出去，令人心惊胆战。verb + frequency➤decrease in, increase in频率下降／上升◆these incidents have increased in frequency.这些事件的发生率上升了。➤decrease, increase, reduce降低／增加／减少频率◆the drug can reduce the frequency and severity of attacks.这种药能降低发病次数和严重程度。➤assess, calculate, compare, determine, estimate, measure, observe评估／计算／比较／决定／估计／测量／观测频率➤affect, change影响／改变频率preposition➤with frequency以⋯的频率◆accidents of this sort are happening with increasing frequency.这类事故发生得越来越频繁。frequency noun² 2of a wave波的频率adjective | frequency + noun adjective➤high, low高频；低频▸➤microwave, radio, vibration, wave微波频率；射（电）频（率）；振动频率；波频▸➤signal信号频率frequency + noun➤range, spectrum频率范围；频谱▸➤band频带➤modulation频率调制frequency /friːkwənsi/ [countable, uncountable] (technical术语) the number of radio waves for every second of a radio signal频率（无线电信号每秒电波数）◆there are only a limited number of broadcasting frequencies.只有数量有限的广播频率。◆a frequency band频带frequency/ˈfri:kwənsi ||; ˈfrikwənsɪ/noun (plural frequencies) 1. [u] the number of times sth happens in a particular period 频率（在特定时间内某种事情发生的次数）: ◇fatal accidents have decreased in frequency in recent years. 近几年死亡事故发生的频率已经下降。 2. [u] the fact that sth happens often 频繁: ◇the frequency of child deaths from cancer near the nuclear power station is being investigated. 在核电厂附近地区，经常有儿童死于癌症，有关当局对这个现象正在进行调查。 3. [c,u] the rate at which a sound wave or radio wave moves up and down (vibrates) 频率（声波或无线电波振动的次数）: ◇high-frequency/low-frequency sounds 高╱低频声 ☞picture at wavelength 见wavelength插图frequencysee ⇨ often 5 fre·quen·cy /`frikwənsɪ; ˈfriːkwənsi/n 1. [u] the number of times that something happens, or the fact that it happens a lot ［事情］发生的次数; 频率:◇+ of the frequency of bacterial infections in aids patients 爱滋病病人细菌感染的频率 2. [c,u] the rate at which a sound or light wave is repeated ［声波、光波的］频率:◇the human ear cannot hear sounds of very high frequency. 人的耳朵听不见频率很高的声音。 |
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