“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	powder metallurgy iron-based products powder metallurgy magnetic materials powder metallurgy material powder metallurgy materials with surper-fine crystalline structure powder metallurgy mechanical parts powder metallurgy of metal matrix composites powder metallurgy porous materials powder metallurgy refractory metal materials powder-metallurgy sand screen powder metallurgy science powder metallurgy superalloy powder metallurgy superalloys powder metallurgy sweating materials powder metallurgy titanium alloys powder metallurgy titanium aluminide powder method powder mildew of rubber tree powder mold compaction powder packing textiles powder pattern powder preparation by mechanical alloying powder preparation by precursors method powder preparation by self–propagation high–temperature synthesis method powder preparation of crude drugs powder prepared prepreg

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。