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hertz

noun
/hɜːts/
/hɜːrts/
(plural hertz)
(abbreviation Hz)
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  1. a unit for measuring the frequency of sound waves赫,赫兹(声波频率单位)Topics Maths and measurementc2
    Word Originlate 19th cent.: named after H. R. Hertz (1857-94), the German physicist and pioneer of radio communication.

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