Age structure has aging trend;
年龄结构有老年化趋势；
Age Structure Change of World Population.
全球人口年龄结构变迁。
The buds were also of increasing age structure.
均呈增长型年龄结构。
The age structure of M. skinneriana is stationary.
野含笑种群的年龄结构属稳定型。
Simply introduce the concepts of the population age structure.
简单介绍有关人口年龄结构的相关概念。
In chapter 2, We study a nonautonomous SIS model with age structure.
第二章，提出了具有年龄结构和周期传染率的的SIS模型。
Also speculate about the current age structure of the elephant population.
并且推测这个大象群落的当前年龄结构。
The variation of age structure is an important factor to affect the economy.
人口年龄结构的变动是影响经济的重要因素。
Of course, the division of population age structure is comparative, but not invariable.
当然，对人口年龄结构的划分是相对的，而不是一成不变的。
"Network school" of coaches, a reasonable age structure, with higher education and reasonable coaches hierarchy.
“网点学校”的教练员队伍，年龄结构合理、具有较高学历和合理的教练员等级结构。
People as occupation, age, family structure differences in the domestic demand is also common.
人们由于职业、年龄、家庭结构的差别，对住宅的需求也是千差万别的。
And the age-structure of sport talents is appropriate.
体育人才整体年龄结构较为合理。
And the age-structure of sport talents is appropriate.
体育人才整体年龄结构较为合理。
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