查询词典 hypothetical population

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。

The genetic structure of the raised population and wild population of Epinephelus malabaricus were studied by RAPD technique. Genomic DNA was extracted from 20 individuals of each population.

采用RAPD标记技术对海南点带石斑鱼养殖群体和野生群体的遗传结构进行了初步研究。

Behavioural Ecology and Populations:Population biology and population dynamics, Life history biology,Reproductive behaviour, sexual selection and the population consequences of individual behavour,Ethnobiology and evolutionary psychology,Ecophysiology.

其中行为生态学和人口包括：人口生物学和人口动力学，生命历史生物学，生殖行为，性的选择和个别行为人口推论，人种生物学和进化心理学，生理生态学。

Up to date, QTL analysis of adult-plant resistance against powdery mildew has not been reported in China. In the present study, QTL mapping of APR was conducted using a doubled-haploid population derived from the cross (Fukuho-komugi × Oligoculm) and a F_(2:3) population from the cross (Bainong64 × Jingshuang16). The methods and main results are described as follows:1. A doubled-haploid population from an intervarietal cross between the Japannese cultivar Fukuho-kumugi and the Israeli wheat line Oligoculm was prouduced by means of wheat × maize crosses.

国内关于白粉病成株抗性的QTL分析尚未见报道，本研究开展了小麦白粉病成株抗性鉴定、遗传连锁图构建、白粉病成株抗性QTL分析，得到以下研究结果：(1)以抗白粉病的日本小麦品种Fukuho-komugi和以色列小麦Oligoculm杂交产生的DH群体为材料，利用313个SSR标记和37个RFLP标记，对Fukuho-komugi和Oligoculm的白粉病成株抗性进行QTL分析。

The allocation of resources, they can solve the problem of externalities on their own.

社会自身也会有调节这些外部效应带来的问题的倾向和能力。

Only say what you mean. Be impeccably honest with your words.

心口如一。决对诚实地表达你的想法。