“dependency ratio”的概念、定义、翻译、参考文献-科学参考

单词	dependency ratio
释义	dependency ratio Encyclopedia 法学年龄释 dependency ratio抚养比人口中非劳动年龄人口数与劳动年龄人口数之比。又称抚养系数或负担系数。用百分比表示。
随便看	product measurable space product measure product measure space product metric product metric space product modeling product modularization product module product moment product-moment coefficient of correlation product-moment correlation product-moment correlation coefficient product moment of area product neighborhood product noise standard product notation product object product of a family of objects product of algebras product of cardinal numbers product of categories product of coal tar processing product of commutators product of correspondences product of cycles

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。