“aging of population”的概念、定义、翻译、参考文献-科学参考

单词	aging of population
释义	aging of population Encyclopedia 法学老年期释 aging of population群体老化在一个人口群体中，随着平均预期寿命的提高，老年人口在总人口中的占比不断上升的状态和趋势。又称人口老化、人口老龄化。
随便看	space of states space of transformations space of ultrafilters space of vector functions space operational medicine space optical communication space optical systems space optics space outside the frame space over an algebra space package material space parity space particle space pattern space perception space photogrammetry space photographic camera space photography space physical exploration satellite spacephysic digitization modeling and analog simulation space physics space physics analysis network space physics analysis network, SPAN space plasma space plasma detection

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。