| [/ˈfriːkwənsɪ; ˋfrikwənsɪ/] n 用法:
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. 用法:
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. |