| 释义 |
Europium [英] [jʊərˈəʊpɪəm] [美] [jʊrˈoʊpiəm] [名] 铕(元素符号为 Eu) 词频排名 45297/55435 学习人数 78 难度等级 3/10 认知比例 41.38% 例句 Eu for Europium Eu代表铕 助记 联想 "Europium is a chemical element with symbol Eu and atomic number 63. It was isolated in 1901 and named after the continent of Europe. It is a moderately hard, silvery metal which readily oxidizes in air and water."
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