短波

duǎn
shortwave (radio)

CEDICT

  1. (physics) shortwave
  2. shortwave
  3. shortwave radio

Wiktionary

標準廣播無線電波頻率三十兆赫(MH2)無線電波在地電離層之間反射適用長距離傳播日光和氣變化影響

重編國語辭典

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