| 释义 |
频率pínlǜ
1.物体每秒振动的次数,单位是赫兹。人能听到的声音的频率是20—20,000赫兹,一般交流电的频率是50赫兹。{frequency; (of objects) number of vibrations per second, marked units of hertz. The frequency of sounds discernible to the human ear range from 20HZ to 20,000HZ. The frequency of alternate currents is usu. 50HZ.}也叫also周率{zhōulǜ}。
2.在单位时间内某种事情发生的次数。{number of occurrences of sth. per unit of time} |