“radium”的概念、定义、翻译、参考文献-科学参考

单词	radium
释义	radium Encyclopedia 理学放射性元素释 radium镭天然放射性元素，元素符号Ra，原子序数88，半衰期最长的同位素的质量数226，属周期系ⅡA族，碱土金属元素。英文名来源于拉丁文radius（射线）。 Physics radium镭88Ra｛化｝ Astronomy radium缩写：Ra。镭 Chemistry ＞放射化学与辐射化学＞放射性元素化学＞释义 radium镭
随便看	preference-indifference relation preference ordering preference query preference region preference relation Preference Semantics preference set preference solution preference testing preference within situations preferential preferential adsorption preferential direction preferential disparate treatment preferential flotation preferential flow preferential oxidation preferential partition preferential pathway preferential species preferential treatment for disability Preferential Treatments for the Manchu and Mongolian preferred preferred argument structure preferred crystallographic orientation

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。