英语词汇“rare-earth element”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	rare-earth element
释义	WordReference Random House Unabridged Dictionary of American English © 2024 rare′-earth′ el′ement (râr′ûrth′),USA pronunciation [Chem.] Chemistryany of a group of closely related metallic elements, comprising the lanthanides, scandium, and yttrium, that are chemically similar by virtue of having the same number of valence electrons. Also called rare′-earth′ met′al. 1955–60
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