“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	prevention of mother-to-child transmission of syphilis prevention of nuclear weapon proliferation prevention of organizational conflict prevention of secondary salinization in greenhouse prevention of the recrudescence of disease prevention of traumatic dental injury prevention system of geological disaster in China prevention system of rural meteorological disaster preventive and control of military zoonoses preventiveand precautionary principle preventive conseration of documents preventive diplomacy preventive maintenance preventive maintenance of aircraft materiel preventive preservation preventive test for electrical equipment preventive treatment mode preventive treatment of disease preventive vaccine Preview In The Mind of Film Or TV previous access router previous access router, PAR previous care-of address previous care-of address, PCoA previous crop characteristics in rotation system

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。