“铅”的概念、定义、翻译、参考文献-科学参考

单词	铅
释义	铅 Encyclopedia 工学[低熔点合金]释 lead铅化学元素，元素符号Pb，原子序数82，原子量207.2，属周期系ⅣA族。理学铅释 lead铅化学元素，元素符号Pb，原子序数82，原子量207.2，属周期系ⅣA族。原子量最大的非放射元素。 Astronomy 全称：lead。缩写：Pb铅 Chemistry ＞无机化学＞无机化学基本概念与无机化合物＞释义 lead铅
随便看	positive semi-definite positive semi-definite form positive semi definite Hermitian matrix positive semi-definite Hermitian matrix positive semi-definite kernel positive semi definite matrix positive semi-definite matrix positive semi-definite operator positive semi definite quadratic form positive semi-definite quadratic form positive semi-definite rational function positive semigroup positive semiorbit positive semi-trough positive sense positive sense single-stranded RNA virus positive sequence positive series positive side positive sidelight positive sign positive skewness positive solution positive species interaction positive spinor

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。