单词 | frequency |
释义 | frequency/ˈfriːkw(ə)nsi![]() noun (plural frequencies) 1 [mass noun] The rate at which something occurs over a particular period of time or in a given sample: an increase in the frequency of accidents due to increased overtime...
1.1The fact or state of being frequent or happening often.Although such things do happen with too great frequency, cases of ‘benign neglect’ are far more common....
Synonyms rate of occurrence, commonness, frequentness, prevalence, incidence, amount; rate of repetition, recurrence, repetition, persistence, regularity; Statistics distribution 2The rate per second of a vibration constituting a wave, either in a material (as in sound waves), or in an electromagnetic field (as in radio waves and light): different thicknesses of glass will absorb different frequencies of sound (Symbol: f or ν) The answer, Zuckerwar explains, is that each one generates silent infrasound - long sound waves at a frequency below 20 hertz....
2.1The particular waveband at which radio signals are broadcast or transmitted: a radio station on a single AM radio frequency [mass noun]: a coding sequence to ensure that everyone changes frequency in the correct manner...
OriginMid 16th century (gradually superseding late Middle English frequence; originally denoting a gathering of people): from Latin frequentia, from frequens, frequent- 'crowded, frequent'. |
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