“history of earth evolution”的概念、定义、翻译、参考文献-科学参考

单词	history of earth evolution
释义	history of earth evolution Encyclopedia 理学〔地质总论〕释 history of earth evolution地球演化历史地球形成于约45.6亿年前，历经冥古宙（约46亿～40亿年前）、太古宙（40亿～25亿年前）、元古宙（25亿～5.41亿年前）和显生宙（5.41亿年以来）等时期的无数变革，最终成为今天的面貌。
随便看	properly differentiable function properly discontinuous action properly discontinuous group properly divergent sequence properly divergent series properly elliptic properly elliptical properly elliptical operator properly elliptic equation properly equivalent form properly hyperbolic properly infinite algebra properly infinite projection properly nilpotent element properly posed problem properly primitive form properly triangular matrix proper maintenance method of photographic lens proper map proper mapping proper mass proper modification proper morphism proper motion proper motion group

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。