| 单词 | radio spectrum |
| 释义 | > as lemmasradio spectrum radio spectrum n. the part of the electromagnetic spectrum comprising radio waves; (also) the spectrum of a particular source at radio frequencies. ΘΚΠ the world > matter > physics > electromagnetic radiation > electronics > electronic phenomena > [noun] > frequency > radio frequency radio frequency1915 radio range1926 radio spectrum1927 radio1968 1927 Davenport (Iowa) Democrat & Leader 30 Dec. 23/4 During 1928 the spotlight of public interest in radio will turn upon the long reaches of the radio spectrum below the broadcasting band. 1964 Times 26 Oct. 10/4 The unusual nature of the radio spectra of these sources was noted last year by an Anglo-American team of radio astronomers. 1992 Economist 28 Mar. 89/1 All these services need an allocation from governments of frequencies in the radio spectrum. 2005 Guardian 11 Aug. (Life section) 17/1 Independent micro-cells have not been possible before, because the GSM radio spectrum is licensed to the big operators. < as lemmas |
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