“集群灭绝”的概念、定义、翻译、参考文献-科学参考

单词	集群灭绝
释义	集群灭绝 Encyclopedia 理学古生态学释 mass extinction集群灭绝在一个相对短暂的地质时期内（通常不足100万年）及一个较广的地理范围内（通常是一个以上的地理大区），整个生态系统的多样性和个体数量出现突然的、异常的、大幅度的下降，甚至是遭受毁灭性的打击。
随便看	closure axiom closure condition closure criterion closure density closure distance closure domain closure error closure-finite closure-finite cell complex closure-finite complex closure of a convex function closure of a domain closure of a field closure of an algorithm closure of an element closure of an operator closure of a ring closure of a set closure of a space closure of a subset closure of a system of functions closure of a troupe's annual performance closure of convex function closure of Huayuankou breach closure of Huzi breach

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。