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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.