英语词汇“deuterium”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	deuterium
释义	WordReference Random House Unabridged Dictionary of American English © 2024 deu•te•ri•um (do̅o̅ tēr′ē əm, dyo̅o̅-),USA pronunciation n. [Chem.] Chemistryan isotope of hydrogen, having twice the mass of ordinary hydrogen; heavy hydrogen. Symbol: D; at. wt.: 2.01; at. no.: 1. Greek deúter(os) second (see deutero-) + -ium 1933 Collins Concise English Dictionary © HarperCollins Publishers:: deuterium /djuːˈtɪərɪəm/ n a stable isotope of hydrogen, occurring in natural hydrogen (156 parts per million) and in heavy water: used as a tracer in chemistry and biology. Symbol: D or ²H; atomic no: 1; atomic wt: 2.014; boiling pt: –249.7°C Etymology: 20th Century: New Latin; see deutero-, -ium; from the fact that it is the second heaviest hydrogen isotope
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更新时间：2025/7/23 20:03:28