“钡”的概念、定义、翻译、参考文献-科学参考

单词	钡
释义	钡 Encyclopedia 理学钡释 barium钡化学元素，元素符号Ba，原子序数56，原子量137.327，属周期系ⅡA族，碱土金属。 Astronomy 全称：barium。缩写：Ba钡 Chemistry ＞无机化学＞无机化学基本概念与无机化合物＞释义 barium钡
随便看	upper solution upper solution; supersolution upper-stage upper stage liquid rocket engine upper strong derivative upper subsemilattice upper sum upper surface upper tangent arc upper topological limit upper transit upper triangular group upper triangular matrix upper-trimmed subsequence upper type upper unitriangular matrix upper urinary tract infection upper urinary tract lithiasis upper value upper variation Upper Volta upper water level for flood control Upper Xiajiadian Culture upper Yangtze platform Upper Yangtze River Rare and Endemic Fish National Nature Reserve

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。