搜索结果: 1-1 共查到“区域人口学 population aging”相关记录1条 . 查询时间(0.193 秒)
Age groups and the measure of population aging
age distribution aging indexes demographic measures old age optimal grouping population aging
2014/11/25
Background: Measures of population aging are important because they shape our perception of demographic trends. Indicators of aging based on fixed ages contributed to a dramatic portrayal of demograph...