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单词 niobium
释义 niobium/naiˈəʊbiəm/n. Chem. a rare grey-blue metallic transition element occurring naturally in several minerals and used in alloys for superconductors (symbol Nb) 【化】(化学元素) niobic adj. niobous adj.[named after Niobe, the daughter of Tantalus: so called because first found in TANTALITE]
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更新时间:2025/3/14 19:19:49