“precambrian”的概念、定义、翻译、参考文献-科学参考

单词	precambrian
释义	precambrian Encyclopedia 理学前寒武纪释 precambrian前寒武纪地球形成之后，到寒武纪之前的地质时期。为一非正式地质年代术语，又称先寒武纪。 Physics precambrian前寒武纪[的]
随便看	steel target testing steel tension bar steel thread forming machine steel track beam steel truss steel tube steel wire steel wire rope construction elevator steel wood composite furniture Steelworker's Strike of United States steel-yard clepsydra steely iron Steen River crater Steenrod Steenrod algebra Steenrod duality Steenrod-Eilenberg axioms Steenrod operation Steenrod power Steenrod powers Steenrod problem Steenrod realization problem Steenrod reduced power Steenrod-Sitnikov homology Steenrod square

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。