“奥陶纪”的概念、定义、翻译、参考文献-科学参考

单词	奥陶纪
释义	奥陶纪 Encyclopedia 理学古生代释 Ordovician Period奥陶纪古生代第二个纪，约开始于4.85亿年前，结束于4.44亿年前。 Biology Ordovician奥陶纪
随便看	downstream back downstream fish passage facilities downstream processing downstream sequence Down the Mountain downthrust down time Downton Abbey Downtown Pittsburgh downward downward bias downward causality downward compatibility downward concave downward continuation downward control principle downward convex downward cumulation downward deviation downward directed set downward drift stoping with backfill downward lighting downward Lowenheim-Skolem theorem downward L-S theorem downward LS theorem

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。