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frequency

美音:[´fri:kwənsı ]点这儿播放单词美音发声
英音:[´fri:kwənsı ]点这儿播放单词英音发声
n.频率,周率,发生次数

难易程度:

frequency为短语/超纲词汇   词频:2403

词形变化:

名词复数:frequencies

近义词, 同义词

frequency


/'fri:kwənsɪ; `frikwənsɪ/
n
1 [U]
(a) rate of occurrence or repetition of sth, usu measured over a particular period of time (某事发生或重复的)频率
*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.
* the alarming frequency of computer errors 计算机差错惊人的频密.
(b) fact of being frequent or happening often 屡次; 频繁
*the frequency of premature births in this region 该地区早产情况的频繁.
2 [C, U] rate at which a sound wave or radio wave vibrates; band or group of similar frequencies (声波或无线电波的)振动频率; 波段:high-/low-frequency sounds 高[低]频的声音
* a musical note with a frequency of
256 vibrations per second 振动频率为每秒256次的音调
* In the evening this station changes frequency and broadcasts on another band. 该电台晚上改变频率, 在另一波段播音.

frequency


npluralfrequencies
[U]
the number of times that something happens within a particular period of time or within a particular group of people
frequency of
 the frequency of serious road accidents
the high/low frequency (of sth)
 the higher frequency of diabetes in older people
 Side effects from prescribed drugs are being reported with increasing frequency (=more and more often) .
 The relative frequency of fraternal twins has halved since 1950.
[U]
the fact that something happens a lot
= regularity
 Businesses come and go with alarming frequency .
[U and C]technical
the number of radio waves, sound waves etc that pass any point per second
 This station broadcasts on three different frequencies.
high/low frequency
 Dolphins produce a high frequency sound.
 the frequency range of the human ear
1. For they came and went with such frequency that I never even got a chance to learn their names.
    因为他们来匆匆,所以我甚至都没有机会知道他们的姓名。

2. What´s the frequency of this broadcast?
    这广播的频率是多少?

3. This depends on the precise radio- frequency of the 21- cm wavelength, or 1420 megacycles per second .
    这种方法依靠21厘米波长或每秒1420兆周的精确无线电频率。

4. This depends on the precise radio- frequency of the 21- cm wavelength, or 1420 megacycles per second .
    这种方法依靠21厘米波长或每秒1420兆周的精确无线电频率。

5. This depends on the precise radio frequency of the 21-cm wavelength, or 1420 megacycles per second.
    这种通迅联系要靠21厘料波段,即每秒1420兆周的精确无线电频率。

6. The realization hit me that I can expect this kind of personal contact with death to occur with greater and greater frequency.
    我顿时意识到我与死亡的接触会越来越频繁。

7. — Whether because of abandonment, separation, divorce or death of a spouse, marriages are dissolving with increasing frequency.
    ——不论是因为被遗弃、分居、离婚,还是因为配偶死亡,婚姻解体的频率都在上升。

8. Once the existence of this wave-length had been discovered, it was not long before its use as the uniquely recognizable broadcasting frequency for interstellar communication was suggested.
    一旦这种波长的实际存在被发现,提出把它作为星际间唯一可辨认的广播频率就为期不远了。

9. I am interested in audio frequency amplifier.
    我对音频放大器感兴趣。

10. It is the natural frequency of emission of the hydrogen atoms in space .
    这是空间氢原子“释放”的自然频率.

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