“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	Tradeand Labour Congress of Canada Trade and Tariff ACT of 1984 trade balance of coal trade balance of crude oil trade balance of energy trade barriers of aquatic products trade books trade competitiveness index trade credit trade dependence Trade Expansion Act of 1962 Trade Facilitation Agreement trade index trade in education services trade in services agreement trade in technology trade mark trademark application trademark appraisal trademark archives management trademark ban trademark coexistence trademark confusion trademark counterfeiting trade mark design

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。