| 单词 | radio spectrum |
| 释义 | radio spectrumSEE SYNONYMS FOR radio spectrum ON THESAURUS.COM nounthe portion of the electromagnetic spectrum that includes radio waves. Origin of radio spectrumFirst recorded in 1925–30 Words nearby radio spectrumradio shack, radio silence, radiosodium, radiosonde, radio source, radio spectrum, radio star, radio station, radiostrontium, radiosurgery, radiosymmetrical Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for radio spectrumradio spectrum nounthe range of electromagnetic frequencies used in radio transmission, lying between 10 kilohertz and 300 000 megahertz Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 |
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