人口老龄化
human aging
Aging process
population aging
aging population
ageing
elderly population
Old age patients
aging of population
Aging
Aging of the population
the aging of the population
population ageing
aging tendency of population
the aging of population
ageing population
the aging of people
Aged tendency of population
ageing of population
aging of populations
人口老龄产业
population aging industry
非劳动年龄人口
non-working age population
婚龄人口
population of marriageable age
劳动年龄人口
the populatin of working age
老人口腔健康生活评量表
geriatric oral health assessment index