查询词典 population

The results showed that resistance of the different Germplasm self-chosen inbred lines to maize rouh dwarf virus have great differences ,Tangsipingtou and P germplasm population were good ,Reid population was bad ,Lvdahonggu and Lancaster population were normal.

结果表明，不同种质自选自交系对玉米粗缩病抗性有明显差异，初步认为塘四平头群和P群总体最好；较差的是Reid群；旅大红骨和Lancaster群抗感病表现相差不大。

It studies taxi passenger's daily travel behavior feature: first, it analyzes temporal distribution of them and proposes the solution of dynamic management of taxis by limiting operation period; second, through investigating the uneven spatial distribution of taxi travel demand and nonlinear correlation of travel density and population density, it reveals the shortcoming of linear matching transportion facility with population number in traditional urban transport criterion, also it questions the limited effect of the licence management for taxis, and it proposes dynamically determing taxi scale according to different traffic zones; third, through exploring the taxi travel patterns in special zones, it reveal Hong Kong citizens travel behavior in Shenzhen, which could analyze the impact of demographic feature to the travel behavior and provide scientific testimony for designing transportion service for the special group; fourth, through accurately grasping the spatial-temporal distribution of taxi travel demand, it could provide innotiative and efficient transportion service at different time and in different place, such as taxi-sharing and flexible shuttle to meet the travel demand; through pervasive data, we could inspect urban expansion and sprawl, monitor the separation of inhatitantion center and employment center and reflect the variation of population centriod and distribution; finally, it reveals how to use digital feature of inhabitant daily travel to detect abnormal condition in the city.

对出租车乘客的日常交通行为特征进行了研究：通过对出租车出行时间分布特征的把握，提出采取限时营运的方法来对出租车进行动态管理的思路；通过分析出租车出行空间分布不均匀的特征以及出行密度与人口密度之间非线性的关系，揭示了传统城市交通规范中按人数来线性配套交通基础设施的缺陷以及牌照管理对于出租车管理的有限效果，提出按照区域动态确定营运出租车规模的思路；通过特定区域出租车出行特征的分析，揭示香港居民在深圳的交通行为特征，从而分析不同人口统计特征对于交通行为的影响，为设计这个特殊群体的交通服务提供科学依据；通过对出租车出行时空分布特征精确的把握，使得我们可以在不同时间、不同地点采用创新、高效的交通服务，如合乘出租车，高级穿梭巴士来满足出行需求；通过普适数据可以监测城市的扩张和蔓延、居住中心和就业中心的分离程度以及反映人口重心与分布的变化；最后探讨了如何利用居民日常出行的数字特征来检测城市异常状态。

Sex-linkage population Used the most information principle prove the follow result: the sum of female and male information entropy less than three times of population gene information entropy, it is equal when population is reach equilibrium, and achieve the largest, from disequilibrium state to equilibrium, the entropy is swing but increase.

群体遗传变异的信息学模型研究（4）性连锁群体用最大嫡原理证明了雌性群体与雄性群体的信息嫡的和小于3倍的群体基因信息嫡，当群体平衡时相等，且达到最大。

Population urbanization is a dynamic process of rural population shifting to urban population along with the economic development.

人口城市化是随着经济发展，农村人口不断转变为城市人口的动态过程，城市化中前期是工业化推动城市化发展。

We analyzed the polymorphism of MHC class II B gene in 14 Chinese alligators sampled from three different areas: the wild population of Xuancheng in Anhui, the captive population of Changxing in Zhejiang and the captive population of Anhui Research Center for Chinese Alligator Reproduction. The gene fragment was amplified using a pair of specific primers designed from the MHC gene sequence of the Spectacled caiman. A total of thirty-four different sequence (15, 10 and 9, respectively) were detected in sampled Chinese alligators.

为了研究扬子鳄种群MHC基因的多态性，我们选取了安徽宣城野生扬子鳄种群、安徽省扬子鳄繁殖研究中心饲养种群和浙江长兴饲养种群三个亚种群的14条扬子鳄，利用一对特异性引物扩增出扬子鳄MHC II类B基因第三外显子的部分片段，并对其进行了克隆、测序，结果从这些扬子鳄样本中共获得34种不同序列，每个亚种群内分别检测到15，9和10个不同序列。

Part one,"The Origins and Changing Nature of Tianjin's Population before the Opening of the City as a Treaty Port", is divided into three chapters according to the changing nature of the population. Chapter one examines in detail the origins, changing number, occupations and education of the population of the three Weis of Jianjin, and the impact of its changing nature upon the transformation of Tianjin from a military fort to an economic city.

第一章详细地考察了明代天津三卫人口的来源、数量变化、人口的职业以及文化教育等问题，尤其就这一时期天津三卫人口性质的变化对天津由军事城堡向新型的经济城市转变的影响作了特别的研究。

While 30 percent of the global population, 2.5 billion people, lived in the city in 1950, the city population increased rapidly and has been up to 50 percent of the global population by the end of 20 century.

到20世纪末，城市人口大幅度增加，已经达到世界人口的50%。

P anax ginseng Nees population ; Human population pressure ; the threshosd of human population pressure.

人参种群；向北消退；人口压力；人口压力阈值

Based on the investigation of 12 plots Betula platyphylla population with an area of 6 000 m^2, the size structure and the life table of the population were established and the survivorship of B, platyphylla population was analyzed by the curves of survivorship, mortality rate, hazard in this paper.

根据12块总面积为6000平方公尺样地的实地调查资料，分析了白桦种群的径级结构，编制了该种群的特定时间生命表，绘制了存活曲线、死亡率曲线和损失度曲线，并用4个生存函数进行种群的生存分析。

This research concentrate on the demographical studies, by using generating population projection models of population growth, widespread study of the urban land use changes in Zwarah (i.e land use classification, land use patterns change and land use structure for 1980, 1990 and 2000), and descriptions of a number of aspects like population, housing, health education, commerce, Industry, Transportation and etc.

本文对Zwarah地区的土地利用变化进行了全面的研究，包括土地利用分类、土地利用模式的变化以及1980年，1990年，2000年的土地利用结构；并且描述了许多方面的情况，如人口、房屋、健康、教育，商业，工业、交通等。

He and Nina moved to California and lived at 2005 Ivar Street, Apt.

他和Nina搬到加州，并在2005年伊瓦尔街，公寓生活。

Droperidol （ potently inhibits transfected HERGchannels and this is the probable mechanism for QT prolongation.

氟哌利多有效地抑制了转染的 HERG 钾通道，可能是 QT 间期延长的机制。