“老少比”的概念、定义、翻译、参考文献-科学参考

单词	老少比
释义	老少比 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	evolutionary time-scale evolutionary track evolutionary tree evolution centre evolution diagram Evolution Drama Society evolution equation evolution inclusion evolutionism evolutionist ethics evolution mass evolution matrix evolution model evolution network evolution of airport engineering evolution of Antarctic bottom water evolution of Antarctic circumpolar current evolution of clustering evolution of coal property evolution of east Asia river system evolution of galaxies exploration evolution of increased competitive ability evolution of inflation evolution of information architecture evolution of institution

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。