英语词汇“nebulium”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	nebulium
释义	WordReference Random House Unabridged Dictionary of American English © 2024 ne•bu•li•um (nə byo̅o̅′lē əm),USA pronunciation n. [Astron.] Astronomya hypothetical element once thought to be present in emission nebulae because of certain unidentified spectral lines, now known to be forbidden transitions of oxygen and nitrogen ions. nebul(a) + -ium 1895–1900
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