sports population structures 体育人口结构
occupational structures of population 人口职业结构
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。
Results the spatial semivariogram model revealed the spatial genetic structures of a human population.
结果实例表明，模型客观地反映了人类群体遗传空间结构异质性和空间自相关性。
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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