查询词典 age distribution

But he found eight-year-olds as tall as 13-year-olds, and boys of ten who weighed twice as much as others the same age. This distribution was viewed by the 19th-century Belgian mathematician Adolphe Quetelet as God's "curve of error", as if the tall and the short were deviations from a correctly proportioned "homme moyen", or average man.

但他的调查也显示：一些8岁儿童同13岁的一样高，一些10岁儿童比同龄重一倍。19世纪的比利时数学家Adolephe Quelet将此情况视为上帝的"错误曲线"——过高和过矮好比是对正常身高的偏离。

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。

Income distribution is an age-old topic of economics, but also a universal human concern of social problems.

收入分配既是一个古老的经济学话题，也是一个人类普遍关注的社会问题。

Stand on a base of upper study, this paper choose distribution map of agriculture and stock raising in seven different historical age as basic material, sum up ten agro-geology environmental factors into Loess plateau Area's AEG system, and cover all these factor's component parts map on distribution draft of every period's agricultural and pastrol, then measure the occupying proportion, bring results into fomula of factor information entropy, finally, take average value of ten factor's information entropy in each period as its characteristical AEG system entropy value.

在以上研究的基础上，论文选择黄土高原地区七个历史时期的农牧业分布图作为基本资料，将该区的十个地质环境要素纳入农业环境地质系统中，将其类别分布图与上述农牧业分布图进行叠加量测，结果代入要素系统熵计算公式，求得了十个农业地质环境要素在各个历史时期中的系统熵，对每个历史时期的这十个熵值求算术平均值就获得了该历史时期黄土高原地区总的农业环境地质系统熵。

From the point of view of geobotany, with the method of correlative factors of growth of plants, a countrywide theoretic ecological division was done for the introduction of Camptotheca acuminata and three kinds of areas of ecological preferent zone, ecological adaptive zone and ecological unadaptable zone were divided. With the theory of synecology, the characteristic on environment, constitution, life form spectrum, diversity, similarity of plots of communities were researched. Applying the method of species association, discrete distribution, indensity index, fractal geometry, etc. to research relations between the species of the communities, space distribution of Camptotheca acuminata, structure of age of Camptotheca acuminata, in different communities. Using the theories of autoecology, distibutons of seeds on land and growth of seedlings in vertical and horizontal directions, biomass of organ of Camptotheca acuminata were analyzed. On the opinions of conservation biology, the external and internal factors impressing Camptotheca acuminata were analyzed to research the mechanism of the endangered species, and with using of CTM Model, the future development direction of Camptotheca acuminata in different communities were forecasted, and. Standing on the position of resources ecology, discussing the regularity of camptothein in Camptotheca acuminata of different sites and seeding of different resources, also the the derive technics of camptothecin.

本文从地植物学的角度，运用植物生长相关因子法，对我国喜树资源的生态适宜区进行了划分，理论上确定了我国的喜树的引种栽培的最适生活区域、生态适宜区域和不适宜生活区域；从群落生态学的角度，对野生喜树所在的典型群落的群落环境、群落组成、群落生活型谱、群落的物种多样性特点、群落样地间相似性进行了研究；从种群生态学的角度，运用种间联结性、离散分布模型、聚集强度指数、分析几何等分析手段，对野生喜树所在典型群落间的种间关系、喜树的空间分布格局、年龄结构等进行了分析；从个体生态学的角度，对不同年龄组的喜树的种子的散落的垂直分布、水平分布、时间分布及种子发芽率和千里重等特点、不同种源的人工喜树苗期特点、喜树的高生长和茎生长特点、喜树的器官生物量特点进行了研究；从保护生物学的角度，对野生喜树的濒危的内部因素和外部因素进行了探讨，并运用CTM模型对不同群落中野生喜树的种群趋势进行了预测；从资源生态学的角度，对我国地理环境下喜树中喜树碱含量的地理分布规律、不同种源的喜树幼苗中喜树碱含量变化规律进行了研究，并对喜树碱的提取工艺进行了探讨。

The fourth part, through an analysis of human resources state of the Northeast, we think the human resources of the Northeast have the following several subject problems: The teenage labor population is too big in specific gravity, unfavorable to the sustainable development of economy; Human resources in urban and rural areas to distribute unbalanced, countryside of the right age to overpopulate , can't meet demands of urban economy development , form the labor force of leaving unused at the same time , cause the waste of the human resources ; Human resources industry distribution is unreasonable, the Northeast human resources distribution between the industry of human resources concentrates on primary industry mainly, proportion is too big, and the labor productivity of primary industry is relatively low, do not have enough ability to make the human resources shift to the secondary and tertiary industries, so seem the secondary and tertiary industries to be delayed effect enough.

第四部分，通过对东北地区人力资源状况的分析，我们认为东北地区人力资源存在以下几个主要问题：未成年劳动人口比重过大，不利于经济的可持续发展；人力资源城乡分布不均衡，农村中适龄劳动人口过多，不能满足城市经济发展的需要，同时形成闲置劳动力，造成人力资源的浪费；人力资源产业分布不合理，东北地区人力资源在产业间的分布主要集中在第一产业，比重过大，而且第一产业劳动生产率较低，没有足够的能力使人力资源向第二、三产业转移，因此显得第二、三产业后劲不足。

The acne distribution was noticed mainly over cheeks and forehead in both genders before age 25. In or omen with adult acne, the distribution of acne seems to move doss ass and to perioral area. Association of acne with menstrual cycle was reported in 69% of women, with pre-menstrual exacerbation in 71% of them.

在25岁以前发的痤疮，不论男性女性都是以两颊及前额为最好发部位，在女性成人期痤疮，其好发部位则有往下延伸到嘴巴周围的现象。69%的女性认为痤疮的发生与月经周期有关，其中71%为经期前恶化。

The results showed that small-scale gaps were the predominant types of disturbance. The average gap density was 12.5 km^(-1). The distribution pattern of gaps was aggregated on south facing slopes and was approximately homogeneous on north facing slopes. Conifer trees were the primary gap-makers in this forest that was dominated by Abies faxoniana, Tsuga chinensis, Betida utilis, both in abundance and diameter rank. The decay class distribution of gap-makers indicated that the mode of gap formation and gap-maker species changed with age of the forest; the contribution of conifer species to gap formation decreased with time and broadleaf species increased.

结果表明：l本区以小型林隙干扰为主，林隙平均密度为12.5个km^(-1)，林隙的分布格局在阳坡和山脊为集聚分布，阴坡近均匀分布；林隙形成木以针叶树为主，岷江冷杉、铁杉和糙皮桦在形成木的数量和径级组成上均居前列。2林隙形成木的腐烂等级分布揭示出林隙形成木的形成方式和种类组成均随时间变化。

Using Flow cytometer,TriTest reagent and Trucount tube(TriTEST/TruCOUNT)to assess absolute counts of CD 3,CD 4 and CD 8T lymphocyte subsets and CD 4/CD 8 ratio and observe T lymphocyte subsets distribution in sex,age,ethnics in the 110 healthy adults(Age∶16-56)in Guangxi.

用流式细胞仪(FACSCalibur，FCS)、三色免疫荧光试剂和绝对计数管(TnTEST/Tru COUNT)，检测 110名广西健康成年人(16～ 5 6岁)静脉全血CD3 、CD4、CD8T淋巴细胞绝对数值和CD4/CD8比值，并观察T淋巴细胞亚群分类计数在性别、年龄和民族上的差别。

This course is an attempt to give the students the basic idea and method of forest management in order to prepare the management plan; Place of forest management in forestry; Content of forest management; Guide principles of forest management; Sustained working; Silvicultural system; Forest yield; Increment; Volume increment; Quality increment; Price increment; Total price increment; Forest maturity; Indicating percent; Productive stage; Physical rotation; Technical rotation; Rotation of maximum volume yield; Highest forest rent rotation; Financial rotation; Cutting cycle of selection system; Normal forest; Normal distribution of age classes; Normal arrangement of stands; Normal increment; Normal growing stock; Normal yield; Improvement of actual forest; Reserve forest; Reserve fund; Planning and plan of forest management; Forest regulation; Area allotment; Volume allotting method; Volume frame work; Area-volume combined frame work; Growing stock; Utilization percent method; Difference method; Pure age-class; Growth method; Control method; Forest subdivision; Forest surveying; Forest survey; Certainty of future policy of forest; Selection of species; Decision of silvicultural system; Decision of rotation; Regulation of future yield; Preparation of management plan; Working the plan; Control and revision of management

本课程之目的为使学生了解森林经营之基本观念及方法，以期编订经营计划，课程包括森林经营学在林学上之地位、森林经营学之内容、森林经营之指导原则、保续作业、森林作业法、森林收获、生长、材积生长、形质生长、腾贵生长、总价格生长、林木成熟期、指率、生产期、自然轮伐期、工艺轮伐期、材积收获最多轮伐期、森林纯益最大之轮伐期、财政轮伐期、择伐林之回归期、法正林、法正龄级分配、法正林分排列、法正生长、法正蓄积、法正伐采额、现时林之改良、预备林、预备金、森林经营上之规划及计划、收获预定、面积配分法、材积配分法、材积平分法、折衷平分法、蓄积法、利用率法、较差法、纯粹龄级法、生长量法、稽核法、森林区划、森林测量、森林调查、将来森林经营方针之确定、树种之选定、作业法之决定、轮伐期之判定、将来收获之预定、经营管理计划之编订、计划之执行、经营管理计划之稽核与检订。

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。

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