| 单词 | extra-spectral | 
| 释义 | > as lemmasextra-spectral   extra-spectral adj.  Brit. , U.S. lying outside the visible spectrum. ΚΠ 1849    M. Somerville On Connexion Physical Sci. 		(ed. 8)	 xxiv. 236  				There are three extra-spectral lines beyond the red. < as lemmas | 
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