英语词汇“emission nebula”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	emission nebula
释义	WordReference Random House Unabridged Dictionary of American English © 2024 emis′sion neb′ula, [Astron.] Astronomya bright diffuse nebula that emits light as a result of ionization of its gas atoms by ultraviolet radiation, as the Orion Nebula, planetary nebulae, and supernova remnants, as the Crab Nebula.
随便看	sure-enough sure-fire surefire sure-footed surefooted surefootedly surefootedness sure-handed sure-handedly sure-handedness surely sureness surer surest sure thing surety suretyship surf surfable surface surface-active surface-active agent surface boundary layer surface condenser surface density

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