“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	para-aminobenzoic acid para-analytic para-analyticity Paraaphaimani parabasal apparatus parabasal body parabasal filament parabiaugmented dodecahedron parabiaugmented hexagonal prism parabocone parabola parabola approximation parabola catacaustic parabola evolute parabola formula parabola inverse curve parabola involute parabola method parabola negative pedal curve parabola of degree n parabola of safety parabola pedal curve parabola vertex parabolic parabolical

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。