“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	tropical fruit trees tropical grass tropical grassland resource Tropical Grasslands-Forrajes Tropicales tropicalized tropical marine climate tropical medicine tropical meteorology tropical monsoon tropical monsoon climate tropical month Tropical Needleleaf Forest tropical niche conservatism hypothesis tropical ocean-atmosphere interaction Tropical Ocean Global Atmosphere tropical pipe Tropical Rainfall Measuring Mission tropical rain forest tropical rainforest tropical revolution tropical savanna tropical savanna climate Tropical Seashore of Sanya Scenic and Historic Area tropical shrubby tussock tropical shrub grassland

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。