Such a policy distorts the age structure: the proportion of population in the younger age groups goes down and proportion of the elderly increases.
这样一项政策改变了年龄结构：年轻人的人口比例下降，而老年人的比例增长。
From age structure, the main forces of the divorce group aged from22 to 35; the stable period of marriage is between 36 and 50; after 50, divorce rate surges again.
从年龄结构看，22 ~35岁人群是离婚主力军，36 ~50岁年龄段是婚姻平稳期，50岁以上人群离婚率上扬。
In this paper we formulate an epidemic model with chronological age and infectious age structure.
本文根据流行病的传染过程和机理建立了具有年龄和病程结构的流行病模型。
Now, the total of construction human capital is growing, level of human capital is low, and age structure is unreasonable.
建筑业的人力资本则呈现出总量上不断增加，人力资本水平较低，年龄结构不合理的现状。
Age-standardized death rate: death rate corrected so as to allow for the effects of the differences in age structure of a population.
年龄标准化死亡率：根据(一国)人口年龄结构差异的影响修正的死亡率。
The paper analyzes the economic effect in the light of the characteristics of the change in population age structure of Gansu province.
本文针对甘肃省人口年龄结构变动特点，分析其经济效应。
One the most notable trends that's played out during this jobless recovery has been the dramatic shift in the age structure of employment.
在这轮伴随着高失业率的经济复苏中，一种最值得关注的趋势是就业人群年龄结构的巨大变化。
It also shows low unit stock volume, unreasonable forest age structure, low forestland use ratio and severe pest, disease and rat disaster.
该流域森林资源有限且分布不均；单位蓄积量低，林龄结构不合理；林地利用率不高，病虫鼠害严重。
First, we examined consumption function model which doesn't contain the age structure of population variables and we conduct a brief analysis.
首先，我们检验了不含人口年龄结构变量的消费函数模型，并对结果进行了简要的分析。
The major reason for the coexistence of many types of age structure is ascribed to the differences in natural disturbance regime in each region.
不同地段自然干扰状况的差异是造成多种年龄结构类型共存的主要原因。
The height structure and diameter structure of A. senticosus population relate with community environments and with its own age structure characteristics.
刺五加种群的高度结构与径级结构的变化都与群落环境以及本身的年龄结构特点有关。
The result revealed that there was obviously changed in age structure and reproduction structure of L. lagurus with the decline of the population quantity.
结果表明，随着草原兔尾鼠数量的下降，种群的年龄结构和繁殖结构都发生了明显的变化。
The result shows that the Tree class structure replacing the age structure is suitable for studying the structure and dynamics of Castanopsis fargesii population.
结果表明，应用立木级结构代替年龄结构研究栲树种群的结构和动态特征是适用的。
The population dynamic of Tsuga tchekiangensis in Wuyishan Nature Reserve was studied and its age structure, the life table, survival curve, mortality rate and killing power curve were analyzed.
对武夷山自然保护区南方铁杉种群动态进行了系统研究，绘制该种群的年龄结构，编制静态生命表，分析存活曲线、死亡率曲线和损失度曲线。
The age structure, reproductive age structure, fecundity and reproductive value of Larix chinensis were studied, the reproductive fitness and the reproductive strategy were analyzed in this paper.
研究了太白红杉种群的年龄结构、生殖年龄结构、生殖力和生殖值，分析了太白红杉种群的生殖适合度和生殖对策。
The time specific life table, survivorship curve and age structure of Cathaya argyrophylla population were obtained through analysing the demography and age structures of its main coenopopulations.
通过对银杉主要群落种群的数量统计和年龄组成的分析，编绘了银杉种群的特定时间生命表、存活曲线和年龄结构图。
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。
The optimal control problem of linear population dynamic system with age-structure in periodic environment was investigated.
在周期环境下，研究一类具有年龄结构种群线性动力系统的最优控制问题。
The optimal control problem of linear population dynamic system with age-structure in periodic environment was investigated.
在周期环境下，研究一类具有年龄结构种群线性动力系统的最优控制问题。
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