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Từ điển WordNet v3.1 - WordNet Dictionary
radio radiation
an electromagnetic wave with a wavelength between 0.5 cm to 30,000 m (Freq. 2) • Syn: radio wave, radio emission • Hypernyms: electromagnetic radiation, electromagnetic wave, nonparticulate radiation • Hyponyms: sky wave, ground wave, radio signal, carrier wave, carrier, short wave, medium wave, long wave • Part Holonyms: radio spectrum, radio-frequency spectrum
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