[mass noun]the rate at which something occurs or is repeated over a particular period of time or in a given sample
频度,频率
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shops have closed with increasing frequency during the period. 在这段时间里已有越来越多的商店歇业。
the fact of being frequent or happening often
频繁。
the rate at which a vibration occurs which constitutes a wave, either in a material (as in sound waves), or in an electromagnetic field (as in radio waves and light), usually measured per second. (Symbol:
(波的)振动频率(符号)
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f 或<Bold>v</Bold>)。
the particular waveband at which a radio station or other system broadcasts or transmits signals
(电台或其他系统广播或传输信号的)频带,波段。
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frequencyn.频度;频率;振动频率;频繁;频带;波段
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frequentlyadv.频繁地;经常地;时常
"mid 16th cent. (gradually superseding late Middle English