“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	social order of rural social organism social organization social organization standards of printing social-orientation social participation social participation by older people social participation of the aged Social participation of the disabled social penetration theory Social Pension Insurance System in China social pensions social perception social perception mode Social Performance Studies social perspective of disability social pheromone social physics social planning Social planning method social planning model Social Policies of Canadian Federal Government social policy social policy action Social policy analysis

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。