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- Age structure dynamics of virgin Larix gmelini forest. 兴安落叶松原始林年龄结构动态的研究
- Age structure may also be represented by a survivorship curve. 存活曲线也可以反映年龄结构。
- 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。
- The age structures of the tillers and some quantitative characters of the clonal populations of the L.chinensis in different interference conditions were comparatively analysed in this paper. 各样地在月份间年龄结构的波动均无规律性，表明羊草无性系种群分蘖植株的年龄结构在生长季内相对稳定。
- In this paper, we study a nonautonomous SIS model with age structure. 摘要研究具有年龄结构的非自治的SIS模型。
- Judging method of individual age and age structure of Stellera chamaejasme population in degraded steppe. 退化草原狼毒个体年龄判定方法及其种群年龄结构的研究。
- The 3rd, 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。
- This article studies the dynamical action of a predator-prey system with age structure. 摘要研究了一类捕食者具有年龄结构的捕食系统的动力学行为。
- Based on age structure, pteroceltis tatarinowii populations were expanding populations. 各种群的年龄结构反映保护区内青檀种群是增长型种群。
- Age structure and regeneration mechanism of Acanthopanax senticosus population were researched in different ecological environments. 对不同生境刺五加种群的年龄结构和更新机制进行了初步研究。
- Ring-width chronologies and tree age structure were both used to investigate the relationship between treeline dynamics and climate change. 而在受季风影响的地区，树木年轮宽度的增加与当年雨季的气候变化关系不大。
- He prefers to assort with people of his own age. 他更喜欢与自己的同龄人交往。
- In order to accurately simulate the labor age structure,this paper uses the OLG method and establishes a recursion model that relatively impairs the age changes. 为了更准确地模拟职工年龄结构的变化,本文采用OLG方法,建立年龄变化相对稳定的职工人数递推模型。
- Even the best quality rubber will perish with age. 就是最佳质量的橡胶也会因老化而腐烂。
- He come to the fore as a physicist at an early age. 他在早年就成了杰出的物理学家。
- Based upon Leslie matrix model with a definite age structure, the consideration of the non-linear complement at random enables the model to reflect some of the random factors. 在确定性具年龄结构的Leslie矩阵模型基础上，考虑具有随机性的非线性补充，使得模型能反映随机因素。
- The average age of the boys in this class is fifteen. 本班男生的平均年龄是十五岁。
- Education should not be restricted to any one specific age group. 教育不应限制在任何特定的年龄组上。
- It was difficult to tell his exact age. 很难判断他到底多大岁数。
