单词查询
actinium
美[æk'tɪniəm],英[æk'tɪniəm],
释义
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n. 锕(放射性化学元素); 网络释义: 元素锕;锕氏;阿克提斯;
例句
A short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead.
一种存在周期短的放射性金属元素,由铀形成,能分裂成锕然后分裂成铅。
Actinide: Any of the series of 15 consecutive chemical elements in the periodic table from actinium to lawrencium (atomic numbers 89-103).
锕系:周期表中从锕到铹(原子序数89~103)的十五个依次排列的一组化学元素。
All are radioactive and have similar properties to actinium.
一种存在周期短的放射性金属元素,由铀形成,能分裂成锕然后分裂成铅。
Actinide: Any of the series of 15 consecutive chemical elements in the periodic table from actinium to lawrencium (atomic numbers 89-103).
锕系:周期表中从锕到铹(原子序数89~103)的十五个依次排列的一组化学元素。
All are radioactive and have similar properties to actinium.