“old dependency ratio”的概念、定义、翻译、参考文献-科学参考

单词	old dependency ratio
释义	old dependency ratio Encyclopedia 法学年龄释 old dependency ratio老年抚养比人口中老年人数与劳动年龄人数之比，以百分数表示。又称老年抚养系数。
随便看	Langmuir probe Langmuir's adsorption isotherm Langmuir Schaefer film Langmuir-Schaefer film Langmuir's equation Langmuir's isotherm Langmuir wave Langmuir wave instability Langmuir wave turbulence Langmuir–Hinshelwood mechanism Lango Lang people Lang Ping Lang Qi Langqi Dao Langqên Zangbo Langrenus crater Lang Shan Langshan chicken Lang Shijun Lang Shiyuan Langston Hughes Langsu languag Lang Tingji language

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