查询词典 populations

Sympatric speciation may occur where there is no geographical separation between the speciating populations of habitat preference.

形成同域性物种形成可能发生在没有地理隔离，但具有宿主选择差异，食物选择差异或生境选择差异的种群。

Sympatric speciation may occur where there is no geographical separation between the speciating populations of habitat preference.

同域性物种形成同域性物种形成可能发生在没有地理隔离，但具有宿主选择差异、食物选择差异或生境选择差异的种群。

The genetic differentiation of eleven sympodial bamboo populations naturally distributed in south China was investigated by using RAPD markers.

利用RAPD分子标记对麻竹自然分布区11个居群的遗传分化进行了分析。

In this paper genetic diversity and differentiation of 3 natural populations of Tamarix chinensis, one of the main predominated tree species in Yellow River Delta, were studied using random amplified polymorphic DNA techniques.

采用随机扩增多态DNA分子标记技术，分析了黄河三角洲主要优势树种之一柽柳3个天然群体的遗传多样性及遗传分化。

Variabilis natural type; applied the theory of numerical taxology and cluster analysis method, classified the Q. variabilis of Qinba and Huanglong mountain; ascertained the standard and method of Q. variabilis plus trees selection about 30 ages in Shaanxi province different areas and selected 49 plus trees that were suitable to different areas; used isoenzyme analysis ,through the detection enzyme system of POD,GDH,EST and ADH ect, researched the genetic variation level of Q. variabilis natural populations and heredity construction of different Q. variabilis natural type .The result showed:(1) Q.

本文通过对栓皮栎地理分布的研究，确定了研究栓皮栎天然类型的地理区域；应用数值分类学原理，采用聚类分析方法，对秦巴山区和黄龙山区的栓皮栎天然类型进行划分；确定了陕西省不同地区30年左右栓皮栎优树选择的标准和方法，并选出了适宜不同地区生长的优树49株；采用同工酶技术，通过对POD、GDH、EST、ADH等4个酶系统的检测，研究栓皮栎天然群体遗传变异水平和不同栓皮栎天然类型的遗传结构。

As populations grew, they adopted more intensive methods of cultivation-composting, terracing, irrigation.

随着人口增加，他们采用更精密的耕种方式：堆肥法、梯田、以及灌溉法。

The development of laboratory populations of Tetranychus truncatus Ehara was studied using twice regression general design method under the conditions of auto-controlled temperature and light in a small room.

金大勇 ，吕龙石，范丽清在自动控制温度和光照条件的养虫室内，采用二次回归通用设计的方法，对截形叶螨实验种群的生长发育进行了研究。

Bioleaching, by means of natural populations of Thiobacillus ferrooxidans and related Thiobacilli, for example, allows recovery of up to 70% of the copper in low-grade ores.

生物萃取，例如应用天然的氧化亚铁硫杆菌菌群和相关的硫杆菌，使低品级的矿石中铜的收率达到70％。

Since the studys data only included populations in theUnitedKingdom and the United States, the findings could not beapplied toother regions, Case said.

凯丝说，由于此项研究的数据主要针对的是英国和美国的人口，所以研究结果在其它地区不一定适用。

Amplified fragment length polymorphism was used to analyze the genetic diversity of 92 Torreya grandis from 6 different populations. Total of 364 loci of the T.grandis genome were examined for molecular variation and 63 loci were polymorphic.

利用AFLP分子标记技术，采用8对引物对6个香榧天然群体的92个个体进行了总基因组DNA水平上的多态性检测，共检测出364个位点，其中多态性位点63个。

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。