“mass extinction”的概念、定义、翻译、参考文献-科学参考

单词	mass extinction
释义	mass extinction 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。 Astronomy mass extinction质量消散
随便看	policy-based insurance policy change cycle policy change dynamics policy choice policy community policy competition policy conflicts and elimination policy cost policy design policy design research policy diffusion policy effect evaluation method policy entrepreneur policy evaluation policy evaluation object policy evaluator policy experiment and policy promotion policy for the construction of important agricultural production bases policy for transformation of resource-based cities policy holder policyholder policy impact evaluation policy implementation policy implementation movement policy improvement

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。