actinium

Definitions

[1] n.
[2] [化] 锕Ac
[3] [医] 锕(89号元素)

[ æk'tɪnɪəm ]

   actinium 例句 来自 Tatoeba
  1. Actinium was discovered by André-Louis Debierne in 1899.
    锕在1899年被他发现。