“老年人口系数”的概念、定义、翻译、参考文献-科学参考

单词	老年人口系数
释义	老年人口系数 Encyclopedia 医学老年流行病学释 coefficient of aged population老年人口系数老年人口在某个国家或某个地区的总人口构成中所占的比例。又称老年人口比例。
随便看	ecological auditing ecological-based forest harvesting ecological benefits of soil and water conservation ecological biochemistry ecological capital ecological carrying capacity ecological characteristics of fish populations ecological civilization ecological civilization view ecological cleaning ecological comparison study ecological compensation ecological compensation mechanism ecological compensation system ecological consciousness ecological construction ecological construction engineering in China ecological control ecological controlling open space ecological conversion efficiency ecological corridor ecological countryside/ecological village/ecovillage ecological crisis ecological culture ecological culture county

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。