“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	secondary light secondary literature secondary liver cancer secondary loess secondary lymphedema secondary lysosome secondary malnutritionsecondary malnutrition secondary market secondary market of mining rights secondary maximum secondary measurement standard secondary meristem secondary metabolism secondary metabolite secondary metabolites fermentation secondary metabolites of diseased forage secondary metabolites of medicinal plants secondary migration of oil and gas secondary mineral secondary mineral resources secondary minimum secondary mirror Secondary mirror mechanism secondary-mirror modulation secondary-mirror modulator

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。