frequency单词什么意思_frequency单词解释 frequency的反义词frequency的例句

名词频繁性; [数][物]频率，次数; 频率分布

1. 频次：体排期中接触到广告信息的人口或家庭的数量.这个时间段一般为4个星期或者整个广告运动持续的时间或者其他.而这个数量通常被表述为占目标受众的百分比.比如经常见到这样的媒介目标描述:频次(frequency)是指在一个确定的时间段内,

2. frequency：f; 频率

3. frequency：freq; 频率;周率

2. frequency的解释

1. 频率;发生次数
The frequency of an event is the number of times it happens during a particular period.

e.g. The frequency of Kara's phone calls increased rapidly...
卡拉的电话飞速增多。
e.g. The tanks broke down with increasing frequency.
坦克越来越频繁地熄火。

2. (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.

e.g. You can't hear waves of such a high frequency.
如此高频率的声波是无法听到的。
e.g. ...a frequency of 24 kilohertz.
24 千赫的频率

noun

1. the number of observations in a given statistical category

Synonym: absolute frequency

2. the ratio of the number of observations in a statistical category to the total number of observations

Synonym: relative frequency

3. the number of occurrences within a given time period

e.g. the frequency of modulation was 40 cycles per second
the frequency of his seizures increased as he grew older

Synonym: frequenceoftenness