英语词汇“carbon 12”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	carbon 12
释义	carbon 12 carbon 12 or carbon-12, n. the isotopic carbon atom used as the standard for atomic weight. [1940–45] carbon 12 car·bon 12 (¹²C), (kar'bŏn), The standard of atomic mass, 98.90% of natural carbon.
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carbon 12