查询词典 populations

Matapopulation is an important frontier in the recent research of mathematic biology, theoretical ecology and conservation biology. The research provides new theoretic bases for the investigation of populations and species which are in severe danger, and makes forecasts and measurement for the populations\' damage due to global habitat destruction and environment deteriorism.

集合种群是当今国际数学生态学、理论生态学和保护生物学的一个主要研究前沿，其研究为濒危物种及种群的研究提供了新颖的理论依据，也为全球范围内的环境恶化和生境破坏对物种造成的伤害做出预测和度量。

In this study, cold hardiness of pupae and over-wintering adults among seasonal populations and geographic populations of Bactrocera dorsalis in China were assayed by measuring their supercooling capacity and cold survival ability.

昆虫是变温动物，遍布地球的各个角落，在其生命过程中，经历着复杂的生态环境变化，它们的生理功能、基本行为甚至进化途径无不受温度的控制和影响(Lee and Denlinger，1991)。

The genetic distance a mong different splash types of H.axyridis was 0.0021 to 0.0328 The aver age gene tic distance was 0.0193 The molecular phylogenetic tree suggested that the me mb ers with the same elytron color were grouped together with high bootstrap confid ence values, showing low diversity among the populations. H. axyridis ab. luna t a Hem and H.axyridis var. spectabilis Fald were most closely related. H.ax yridis var. axyridis Pallas was a primordial population of coccinellidae, which wa s differentiated earlier than the other populations.

分子系统树显示：各类群间遗传分化很小，鞘翅颜色相同的瓢虫均已较高的置信值聚在一起；双月斑变型和显明变种亲缘关系最近，重名变种为原始类群，分化较早，与其它12种不同色斑异色瓢虫亲缘关系较远。

The experimental results showed that the absence of effective pollination in wild peonies under natural conditions, especially between different populations, was an important cause for the declining of seed adaptability, and that seed epicotyl dormancy is an important intrinsic factor in its sexual cycle which aggravated the scarcity of wild peony seedlings and populations in nature.

实验证明：在自然状态下野生牡丹缺乏充分的传粉，特别是居群间的传粉不足，导致其种子质量低下；而野生牡丹种子特殊的萌发特性，特别是严格的上胚轴休眠，则是导致其出苗率极低及自然状态下幼苗和种群稀少的重要内因。

Nine Chinese yak breeds (Maiwa, Tianzhu White, Qinghai Plateau, Sibu, Zhongdian, Pali, Tibetan High Mountain, Jiulong and Xinjiang) and Gayal were analysed by means of 16 microsatellite markers to determine the level of genetic variation within populations as well as genetic relationship between populations and population structure for each of the breed.

本研究通过16个微卫星标记分析了我国9个牦牛品种（麦洼牦牛、天祝白牦牛、青海高原牦牛、斯布牦牛、中甸牦牛、帕里牦牛、西藏高山牦牛、九龙牦牛和新疆牦牛）和大额牛的品种内遗传变异、品种间遗传关系及其群体结构。

The effect of genetic drift is larger in small populations, and smaller in large populations.

在小的群体中，遗传漂变的影响较大。

The current statuses of communication between three populations on the problem of students'gender-role socialization are investigated, and interaction influences of three populations are explained according to the symbolic interactionism.

调查了三个群体针对中学生性别角色社会化问题的交流现状，根据符号互动论解释了三个群体的互动影响。

In general, intertidal populations had higher genetic diversity than inland populations.

结果表明，在同一地点，潮间带居群的遗传变异水平均高于其陆生居群。

Although research among low-literacy populations is essential for eradication of health disparities, it is important to note the challenges of researching low-literacy populations.

虽然在低文化人群中的研究是消除健康差别的基本条件，但是更重要的是注意在这种研究中的困难和问题。

In this experiment, 1.5% optimized microbial populations were added. The optimized microbial populations were primarily identified as Pseudomonas, Micrococcus, Actinomayces, Penicillium and Aspergillus.

在实验装置内加入了1.5%的优化菌群制剂，优化出的菌群初步鉴定主要有：假单胞菌属、微球菌属、放线菌属、真菌类的青霉属和曲霉属等。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。