“francium”的概念、定义、翻译、参考文献-科学参考

单词	francium
释义	francium Encyclopedia 理学放射性元素释 francium钫天然放射性元素，元素符号Fr，原子序数87，半衰期最长的同位素的质量数223，属周期系ⅠA族，碱金属元素。为纪念发现者M.佩雷[注]的祖国法国（France）而命名。 Astronomy francium缩写：Fr。钫 Chemistry ＞放射化学与辐射化学＞放射性元素化学＞释义 francium钫
随便看	severe occupational poisoning accident severe palpitation severe plastic deformation severe restriction severe wind-eroded land Severi Severi divisor Severi group Severi invariant Severi number severity severity-based response to public emergency severity evalution of MDS severity of sampling severity of the consequences of the accident Severnaya Zemlya Severn River Severo Ochoa Severo-Zapadnyy Federal’nyy Okrug severs drought during 1928～1929 severs drought in Chongzhen period of Ming Dynasty severs drought in Wanli period of Ming Dynasty Sevilla Seville sevoflurane

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