“砹”的概念、定义、翻译、参考文献-科学参考

单词	砹
释义	砹 Encyclopedia 理学放射性元素释 astatine砹人工放射性元素，元素符号At，原子序数85，半衰期最长的同位素的质量数210，属周期系ⅦA族，卤族元素。英文名称来源于希腊文astatos（不稳定）。 Astronomy 全称：astatine。缩写：At砹 Chemistry ＞放射化学与辐射化学＞放射性元素化学＞释义 astatine砹
随便看	period of a differential period of a function period of a group period of alternating current period of an element period of an ergodic class period of an oscillation period of a semigroup period of a wave period of coefficients period of dormancy period of intercalary month period of light variation period of limitation of administrative litigation period of military government period of moon's node Period of Political Instruction Period of Political Instruction Constitution of Republic of China period of pseudorandom numbers period of revolution period of revolution, orbital period Period of Rex in Rome period of rotation Period of Southern and Northern Courts period of submergence tolerance

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。