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Age structure may also be represented by a survivorship curve.

存活曲线也可以反映年龄结构.

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In this paper , we study a nonautonomous SIS model with age structure.

研究具有年龄结构的非自治的SIS模型.

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We investigate optimal policy for a predator - prey system with age - dependent.

研究一类具有年龄结构的捕食 - 食饵种群动力系统的最优收获策略.

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Age structure is a foundational base to study the population dynamics.

年龄结构是研究种群动态的重要基础.

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The 3 rd, want appropriate to solve the problem of worker age structure with overall this locality.

第三, 要妥善解决本地总体的职工年龄结构问题.

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The age structure of most dominant species community is declining, and the community species composition unstable.

样地内多数优势种群的年龄结构为衰退型, 群落的种类组成不稳定.

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This paper is a case study on age structures of scientific collaboration in Chinese computer science.

文章是继我国计算机科学领域科学合作的年龄结构之后又一案例研究.

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The census results show that big changes have taken place in the population's age composition.

这次人口普查反映出中国人口年龄结构发生了较大变化.

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The population age structure is more reasonable, the existing reserve of human resources.

人口年龄结构较为合理, 现有、后备人力资源充足.

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For example the user age structure that the net swims is very young also.

例如网游的用户年龄结构也很年轻.

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All 4 populations have opposite pyramid age structure, and few coning individuals, which is still decreasing.

所有四个野生种群的年龄结构均呈倒金字塔型,开花个体数少, 并且还在不断减少.

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