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单词 berkelium
释义 berkelium/bɜ:ˈki:liəm, ˈbɜ:kliəm/n. Chem. a transuranic radioactive metallic element produced by bombardment of americium (symbol Bk) 【化】(化学元素) [modern Latin from Berkeley in California (where it was first made) + -IUM]
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