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electromagnetic spectrum
chem.	电磁谱
IT	电磁频谱
multimed.	电磁辐射频谱
rem.sens.	电磁波谱
tech.	电磁波谱; 电磁振荡频谱; 电磁光谱
telecom.	电磁波频谱
electromagnetic wave spectrum
ecol.	电磁波谱
English thesaurus
electromagnetic spectrum
mil., logist.	The range of electromagnetic radiation groups: electrical waves, Hertzian waves, infrared rays, visible light, ultraviolet rays, X-rays, gamma rays and cosmic rays. Hertzian waves are those waves used for telecommunications. They group the waves used by radio/sound equipment, electro-magnetic waves and satellites. Transmissions through fiber optic use the visible part of the electromagnetic spectrum. (FRA)
USA	The range of frequencies of electromagnetic radiation from zero to infinity. It is divided into 26 alphabetically designated bands (JP 3-13.1) see also electronic warfare

electromagnetic spectrum: 7 phrases in 4 subjects

Air defense	1
Electronics	2
Space	1
Technology	3