Conclusion Age distribution of tuberculous infection of specific population could be calculated by a mathematical model on the basis of specific data.

结论可以利用特定资料通过数学模型来推算和预测特定人群的结核菌感染年龄分布。

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Age structure effect — Changes in the age distribution induced by the rate of population growth.

年龄结构效应——由人口出生率引起的年龄分布变化。

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The age structure of Chinese sports population take on a distribution of "saddle shape", which showed that the ageing population (especially the female elderly) makes an important role in it.

根据研究表明，我国体育人口年龄结构呈现“马鞍型”分布，老年人口是体育人口的重要组成部分。

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If we also take into account the changing relative age distribution of the population, there would be a total of 1.6 million new homeowners.

WSJ: Low-Interest Mortgages Are the Answer