“International Day of Older Persons”的概念、定义、翻译、参考文献-科学参考

单词	International Day of Older Persons
释义	International Day of Older Persons Encyclopedia 法学〔基本概念〕释 International Day of Older Persons国际老年人节由联合国设立的节日，旨在呼吁人类关注老龄化问题。
随便看	Clostridium thermocellum clostripain closure closure algebra closure amplitude 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

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。