“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	defect of dentition defectof formation of railway defect of illumination defect of knitted fabric defectoscope defectoscopy defect relation defects in ceramics defects in growth sector boundary defects in semiconductors compound defects of continuous casting slab or billet defects of oil and gas pipeline body defects of wood due to biological damage defect space defect state defect subgroup defect subspace defect theorem defence Defence Horizon Defence Meteorological Satellite Program satellite Defence of Poetry defence reflex Defence Support Program defender

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