frequency

英[ˈfriːkwənsi]美[ˈfriːkwənsi]

n.频繁性，[数][物]频率，次数，频率分布；

复数：frequencies;

例句

If we can know their frequency we will monitor their talking.如果我们知道他们的频率, 我们就能监听他们的谈话。

Fatal accidents have decreased in frequency over recent years.近年来死亡事故发生的频率已经下降。

Wavelet transform has the MRA characteristic and can make time - frequency analysis.小波分析具有多分辨率分析和时频定位的特点,能够分析信号的*部特征.

The label's send and receive information via radio frequency.标签的信息通过无线电频率收发.

To melt the charge, radio frequency ( induction heating ) or resistance heating have been used.为了熔化进料, 可用射频 ( 感应加热 ) 或电阻加热法.

The main effect is to raise the fundamental slosh mode frequency.主要作用是提高基本的晃动频率.

Orthogonal frequency division multiplexing ( OFDM ) is a special multi - carrier transmission technology.正交频分复用 ( OrthogonalFrequencyDivisionMultiplexing, OFDM ) 是一种特殊的 多载波 传输技术.

Orthogonal frequency division multiplexing ( OFDM ) is a multi - carrier modulation method .正交频 分多路 复用是一种 多载波调制 技术.

OFDM is a type of modulation is called orthogonal frequency division multiplexing.OFDM是一种新型的调制方式,称为正交频分复用.

The synchronized low - frequency rectifier is similar to a push - pull rectifier.同步 低频 整流器与推挽整流器相似.

英语四级真题

That approach will eliminate most cord-cutting concerns—but what about their wireless equivalent, jamming? With the right device tuned to the right frequency, what's to stop a thief from jamming your setup and blocking that alert signal from ever reaching the base station?Jamming concerns are nothing new, and they're not unique to security systems.

Security devices are required to list the frequencies they broadcast on—that means that a potential thief can find what they need to know with minimal Googling.

It's easier to find and acquire jamming equipment for some frequencies than it is for others.

Burglars can easily get a security device's frequency by Internet search.

Any device that's built to receive a wireless signal at a specific frequency can be overwhelmed by a stronger signal coming in on the same frequency.

Increasingly, researchers have begun to look at the quality of relationships, rather than at the frequency of contact, between the elderly and their children.

with the right device tuned to the right frequency, what's to stop a thief from jamming your setup and blocking that alert signal from ever reaching the base station?

英语六级真题

If we can help to direct students to more of these types of campuses and help students to understand them to be realistic and accessible places, have them apply to these schools at greater frequency and ultimately get in and enroll, we are going to raise the success rate, Rubinoff said, citing a variety of colleges ranging from large state institutions to smaller private schools.

For this he and his wife received the Nobel Prize for physics in 1910, and did so again in 1912 for their work on very high frequency radio waves.

Their work on very high frequency radio waves

"If we can help to direct students to more of these types of campuses and help students to understand them to be realistic and accessible places, have them apply to these schools at greater frequency and ultimately get in and enroll, we are going to raise

If we can help to direct students to more of these types of campuses and help students to understand them to be realistic and accessible places, have them apply to these schools at greater frequency and ultimately get in and enroll, we are going to raise

柯林斯高阶英汉双解学习词典释义

N-UNCOUNT

频率;发生次数

The frequency of an event is the number of times it happens during a particular period.

例句

N-VAR

(声波或无线电波的)频率，周率

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.

例句

英汉词典释义

n.

(某事发生可重复的)频率

经常发生, 频繁

(声波或无线电波的)振动频率; 波段

发生率；出现率；重复率

频率（无线电信号每秒电波数）

英英词典释义

Noun

1. the number of occurrences within a given time period (usually 1 second);

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

行业词典

体育： 训练的次数；

动物学： 频度；

化学： 频数；

医学： 次数：每一单位时间内，一个周期过程中重复发生的次数，例如，粒子每秒钟振动的次数或完整波每秒钟重复的次数(周波数)；频率：特定事件发生的次数或归于某特定范畴的人口数或统计样本数；相对频率：在许多重复试验中，特定事件发生的平均数；

土木工程： 频率；

心理学： 频率；

植物学： 频度；

物理学： 锁频；frequency-locking；

生态学： 频度；群落中某种植物出现的样方数占整个样方数的百分比。；

电力： 变频调速；［speed］ control；频敏变阻器；frequency-sensitive rheostat；

电子学： 频率；

电工： 频率；

石油： 频率；

通信： 频率；交变信号在单位时间内的重复次数。 频率的基本单位是赫兹， 符号 Hz， 表示每秒一个完整周期。常用单位有千赫（kHz）、兆赫（MHz）与吉赫（GHz）。；

铁道： 频率；