词汇 | berkelium |
释义 | berkelium noun [ U ] uk/bɜːˈkiː.li.əm/ us/ˈbɜ˞ː.kli.əm/ (symbol Bk)(放射性元素)锫 a chemical element that is a soft, silver-white metal, and is radioactive Berkelium is a very expensive and rare element. 锫是一种非常昂贵的稀有元素。
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