年龄分布
- 与 年龄分布 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The distribution of muscle fibers classified on the basis of their content of different myosin heavy chain isoforms was analysedin muscle samples fromthe plantaris muscles of postnatal different ages of rats and rabbitsby correlating standard actomyosin ATPase and succinic dehydrogenase SDHase histochemistry.
应用建立在肌球蛋白重链异构体基础上的标准肌动球蛋白ATP酶和琥珀酸脱氢酶组织化学方法,分析大鼠和家兔出生后发育各年龄阶段跖肌纤维型分布。
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WT5BZ A primary study of the aerobe or facultative anaerobes number,variety and distribution of the feces in three age groupssix Giant Pandas fed in China research and conservation center for the Giant Panda,Wolong Sichuan has been made.
对四川卧龙中国保护大熊猫研究中心 6只不同年龄的健康大熊猫全年粪样内好氧和兼性厌氧菌的数量、种类和分布情况进行了初步研究。
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A description of detailed quantitative distribution of APUD cells has been made. The relationship between the distribution of APUD cells and naso...
对不同年龄期的人鼻咽部APUD细胞作了计数和分布描述,并讨论了其分布与鼻咽部肿瘤可能存在的关系。
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Based on the information taken from the subcompartmental records a comparison between the actual and normal forests was made and a new point of view was proposed in the article: in the case of cultivating timber-forest which is different in cutover age, age class and growing speed within the range of the whole forest station, the forest age class distribution showing the opposite shape of "J" is of more benefit to keeping the relative stability of all the age class area than the age class distribution of th...
本文在统计森林资源小班档案卡片有关资料的基础上,把现实林分与法正林相比较,用法正林学说来指导全场森林的调查。并提出了一个新的观点:在整个经营单位内,培育不同生长速度,不同主伐年龄,龄级期不同的用材树种,森林的龄级结构呈反"J"形分布此法正分布更有利于维持各龄级面积的相对稳定,并且,年伐量的波动不大,有利于森林的永续利用。
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Due to reassembly and maintenance,the reliability model for mechanical equipment is broken,so it is necessary to research and estimate the safety reliability of mechanical system.
基于机电系统中零件的失效时间分布密度函数,研究了在重组维护过程中机电系统服役期间零件年龄结构的分布规律,发展了机电系统可靠性数学模型。
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As a result, the P schrenkiana population has reverse-J shaped DBH class, age structure and tree density patterns but with a bell-shape biomass pattern. The Schrenk spruce population also has a classical linear survivorship curves between Deevey Ⅱ and Deevey Ⅲ type.
研究结果表明中部天山雪岭云杉种群的胸径、年龄结构和种群密度都呈倒-J型分布,种群生物量呈钟型分布,存活曲线基本介于Deevey Ⅱ和 Deevey Ⅲ型之间。
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In this research, sixty-one patients in unconscious state after hypertensive intracerebral basal ganglia hemorrhage was randomly divided into two groups: The proctoclysis group (31cases) was treated with Tongfuxingshen liquid but the control group (30cases) treated with Tongfuxingshen capsul for seven days. Otherwise, the symptomatic therapy was used simultaneously. The curative effects such as the time of the patients from unconsciousness to consciousness state, the scores of Glasgow- Pittsburgh coma after treated seven days, and the scores of nervous functional defects after treated fourteenth days were observed.
本试验将我院脑病中心1999年9月~2002年5月收入的、符合纳入标准的61例出血部位在基底节区,且伴有意识障碍的高血压脑出血患者,按简单随机分组法,分为31例通腑醒神液直肠滴注治疗组与30例通腑醒神胶囊灌胃对照组,两组病人在性别分布、平均年龄、既往史评分、伴发疾病评分、出血量分布、意识状态分级情况等方面经统计学处理无显著性差异,表明临床资料具有可比性。
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The onset of uplifting in the Mid-upper Yangtze region is constrained by the combination of analysis of apatite fission track ages with modeling of fission track length distribution.
采用磷灰石裂变径迹年龄空间分布特征定性分析与径迹长度分布数据定量模拟相结合,约束了中上扬子地区的抬升剥蚀时限。
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Firstly, according to study dynamic changes of the elements structures in succession about natural and artificial forest, then summarized regular patterns;at the same time.based on the study of Coupling Relationship between structure and function of water conservation forest established the ideal structures from the stand level and the watershed level. The ideal structures from the stand level: uneven-aged, double layer and mixed structure, and trend to natural forest. The watershed level followed the same principle, that is double layer patches, uneven-aged forest well-distributed and to build up different forest patches in watershed.
首先,经过对北京山区水源林天然林和人工林结构要素的演替动态研究,提出其发展规律,同时依据水源林结构与功能耦合关系研究,从林分层次和流域层次上分别构建了水源林的理想结构,其中,林分层次上水源林的理想结构为:异龄、复层、混交的结构状态,林分结构趋于天然林结构的特征;在流域层次上水源林的理想结构为也应形成&复层&、&异龄&、&混交&的结构,即:在流域各水源林斑块间形成林冠层复层、斑块内部乔木、灌木、草本层的复层;不同水源林年龄面积上的均匀分布;形成不同水源林斑块间的镶嵌分布。
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Dead branches or knots in different sizes of tree was studied and different branch development phases of growth,suppression,death and self-pruning was analyzed to evaluate the effect that knot size and distribution impact on timber quality.Branch and knot dynamic models were developed using stand and tree variables.Based on multipleunit stepwise regression method, the individual tree growth model was established using forest and crown factors as the variable. The best taper equation model of Larix olgensis was bucking data of 130 sample trees selected in the studied area.
本研究以不同年龄、不同密度及不同立地条件的落叶松人工林作为研究对象,基于19块标准地中95株标准木的树干解析、枝解析及节子剖析数据,揭示了不同林分条件下林木的枝条数量及在树冠内的空间分布格局、生长发育规律;研究了不同大小树木的死枝和节子大小及其变化规律,分析了枝条的生长、被压、寿命和自然整枝过程,评价了节子大小和分布对木材质量的影响;以林分变量、林木变量和着枝深度等为自变量建立枝条生长和节子大小的动态预测模型;选择林分因子和林木的树冠因子作为竞争因子,用多元逐步回归的方法建立落叶松人工林与距离无关的单木生长模型,并根据研究地区选取的130株造材样木数据,建立了落叶松人工林最佳削度方程。
- 推荐网络例句
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Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.
在对危险的南部地区访问时,他斥责什叶派民兵领导人对中央集权的挑衅行为。
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In fact,I've got him on the satellite mobile right now.
实际上 我们已接通卫星可视电话了
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The enrich the peopling of Deng Xiaoping of century great person thought, it is the main component in system of theory of Deng Xiaoping economy, it is a when our country economy builds basic task important facet.
世纪伟人邓小平的富民思想,是邓小平经济理论体系中的重要组成部分,是我国经济建设根本任务的一个重要方面。