sports population structures 体育人口结构
population spatial structures 人口空间结构
As a weak group,the old age group is the special part of social population structures,and need to be protected particularly. Furthermore,the aged peasants in our country are the weakest of a11.
老年群体是社会人口结构中的特殊部分,处于弱势地位,需要给予特殊保护。
参考来源 - 当前我国农民养老问题研究Population structures and age structure impact the Amount of residential demand,Urban and rural structure impact the structure of residential demand. this paper study the relationship between population structures and residential demand from the point of population structures.
就人口结构与房地产的关系而言,人口的年龄结构和城乡结构直接影响了住宅需求的总量,而人口家庭结构直接影响了住宅需求的规模,因此选取人口问题的焦点人口结构,研究人口结构与住宅需求的关系,对于房地产开发建设具有重要意义。
参考来源 - 人口结构对住宅需求的影响·2,447,543篇论文数据，部分数据来源于NoteExpress
The population structures vary with time and site.
种群结构因时间、地点而异。
As a weak group, the old age group is the special part of social population structures, and need to be protected particularly.
老年群体是社会人口结构中的特殊部分，处于弱势地位，需要给予特殊保护。
The different population structures of Abies yuanbaoshanensis in different associations reflected the process of succession of community.
元宝山冷杉不同群丛元宝山冷杉种群结构的差异反映了群落的演替过程。
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