Age dependency (ratio)

同义词释义

1)Age dependency (ratio),年龄抚养比率2)aged-dependency ratio,老年人抚养(比)率3)the ratio between working and retired population,老年抚养比4)Theoretical Old Support Ratio,理论老年抚养比5)Actual Old Support Ratio,实际老年抚养比6)age-specific rate,年龄别比率