“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	pathogenicity island，PAI pathogenicity of pathogen pathogenicity related genes pathogenic mechanism pathogenic microbe of pastoral plant disease pathogenic microbiology of aquatic animals pathogenic qi pathogenic variation of pathogen pathogen limits for food pathogen microscopic diagnostic techniques pathogen preservation pathogen resistance trait of transgenic plant pathogens causing canker pathogens causing downy mildews pathogens causing leaf spot pathogens causing powdery mildew pathogens causing scab pathogens causing smut pathogens causing wilt disease pathological pathological atrophy pathological calcification pathological changes of neuron pathological characteristics of children pathological diagnosis

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。