英语单词
francium是什么意思
francium
英[ˈfrænsiəm]
美[ˈfrænsiəm]
- n.（放射性元素）钫（符Fr）
双语例句
- 1 . The half - life of francium is 22 minutes.
- 钫的半衰期是22分钟.
来自辞典例句
- 2 . Francium is the densest of the Alkali Metals and also radioactive.
- 钫是碱金属中密度最大的,具有放射性.
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