| 单词 | radio wave |
| 释义 | radio waveSEE SYNONYMS FOR radio wave ON THESAURUS.COM noun Electricity.an electromagnetic wave having a wavelength between 1 millimeter and 30,000 meters, or a frequency between 10 kilohertz and 300,000 megahertz. Origin of radio waveFirst recorded in 1915–20 Words nearby radio waveradiotransparent, radiotropic, radio tube, radio valve, radiovision, radio wave, radio waves, radio window, radisectomy, radish, Radisson Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for radio waveradio wave nounan electromagnetic wave of radio frequency 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 Scientific definitions for radio waveradio wave A very low frequency electromagnetic wave (from roughly 30 kilohertz to 100 gigahertz). Radio waves are used for the transmission of radio and television signals; the microwaves used in radar and microwave ovens are also radio waves. Many celestial objects, such as pulsars, emit radio waves. See more at electromagnetic spectrum. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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