“child aged ratio”的概念、定义、翻译、参考文献-科学参考

单词	child aged ratio
释义	child aged ratio Encyclopedia 法学年龄释 child aged ratio老少比总人口中老年人口数与少儿人口数之比。一般以百分数表示。
随便看	rural power supply rural production-living-ecology space rural production waste rural projectionist rural property rights trading market rural public finance rural public goods rural public management rural public service facilities rural public space rural records rural reform rural renaissance rural residential lightning protection rural restructuring Rural School Consolidation Movement rural settlements rural settlement system rural sewage rural sewage treatment rural sideline production rural small wind generation rural social assistance rural social contradiction rural social differentiation

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。