“emission nebula”的概念、定义、翻译、参考文献-科学参考

单词	emission nebula
释义	emission nebula [i`mish·ǝn `neb·yǝ·lǝ] ^ASTRONOMY A type of bright diffuse nebula whose luminosity results from the excitation and ionization of its gas atoms by ultraviolet radiation from a nearby O- or B-type star.
随便看	Testudinata Testudinellidae Testudinidae test under mask test well tetanolysin tetanophobia tetanospasmin tetanus tetanus antitoxin tetanus toxoid tetany tetany of the newborn Tethinidae Tethys tetra-\\(2-ethylbutyl\\)silicate tetraamylbenzene Tetrabranchia tetrabromobisphenol A tetrabromophthalic anhydride tetrabutylthiuram monosulfide tetrabutyltin tetrabutyl titanate tetrabutyl urea tetracaine hydrochloride

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