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单词 long wave
释义

WordReference Random House Unabridged Dictionary of American English © 2024
long wave′, 
    1. Electricityan electromagnetic wave over 60 meters in length.
    2. GeologySee L wave. 
    • 1830–40
    long-wave′, adj. 

Collins Concise English Dictionary © HarperCollins Publishers::
long wave n
  1. a radio wave with a wavelength greater than 1000 metres
  2. (as modifier): a long-wave broadcast
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