“奥陶纪末大灭绝”的概念、定义、翻译、参考文献-科学参考

单词	奥陶纪末大灭绝
释义	奥陶纪末大灭绝 Encyclopedia 理学古生物学释 end-Ordovician mass extinction奥陶纪末大灭绝距今约4.44亿年，地球海洋生命系统发生过的一次大规模的多样性快速下降事件。
随便看	guaranteed reagent (G.R.) Guaranteed Recommendation guarantee for enforcement guarantee insurance guarantee level of mineral resources guarantee of negotiable instrument guarantee of required documents guarantee reagent guarantee reagent (G.R.) guarantor of negotiable instrument guard guard bit guard cell guard column guarded commands guard hair guardian Guardian Council of the Constitution guardian horseshoe bat guardian of actor throat guardian responsibility guardianship guarding guarding against the barbarians or the foreigners guarding digit

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。