... age structure年龄结构 aged-dependency ratio老年人抚养〔比〕率 agents of erosion侵蚀作用力；侵蚀营力 ...
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... age structure年龄结构 aged-dependency ratio老年人抚养〔比〕 agents of erosion侵蚀作用力；侵蚀营力 ...
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aged dependency ratio 老年抚养率
·2,447,543篇论文数据，部分数据来源于NoteExpress
That means China's old-age dependency ratio (which compares the number of people over 65 with those aged 15 to 64) will soar.
ECONOMIST: Demography
Across Europe, the dependency ratio of older people (aged 65 and over) to those of working age (15-64) will double from one-to-four to one-to-two by 2050.
ECONOMIST: Economics focus
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