查询词典 populations

Molecular ecological methods may be used for phylogenetic analysis, genetic differentiation of populations, and identification of kinship.

利用分子生物学技术可以研究物种的系统发育、种群的遗传分化、个体的亲缘关系等。

With the phylogenetical methods, we compared the ancient Turfan with modern Xinjiang and four Central Asian populations in order to detect their relationship.

我们对新疆地区的古代人群的遗传距离、核酸多样性和平均配对差异与东亚、欧洲和中亚的现代群体进行了比较。

Random amplified polymorphic DNA analysis was used to detect the genetic variation in populations of Phytophthora infestans from major potato production regions in China.

本文应用RAPD技术检测了我国主要马铃薯产区致病疫霉的遗传分化情况及不同地区菌株间的亲缘关系。

The result of cluster analysis is similar for main wood nature properties and phenotypic properties in 20 natural populations of Picea asperata.

依据管胞和木材基本密度性状的变异特征，可进行优良纸浆材群体的初步选择和群体聚类分析。

At the same time, however, scientists and fisheries experts are noticing a slow but worrisome decline in piscine populations: it appears

但是同时科学家和鱼类专家都发现鱼类数量在缓慢但令人担忧地下降：这种情况表明海洋正处于枯竭的危险中。

Due to their strong piscivorous habit, the exotic glass fish may cause damaging effects on the aquatic ecosystem and native fish populations.

由於暹罗副双边鱼对於鱼苗有很强的掠食性，因此该族群对於日月潭水库的生态系统可能会造成很大的危害。

Fruit oil Content of 9 natural populations of Pistacia chinensis was investigated with Nuclear Magnetic Resonance method.

采用核磁共振技术，对我国黄连木分布区9个天然群体果实含油率进行取样测定。

Farm. In the past (until app. 25 years ago) pistachiodiversity was maintained high in the field through a number of cultivation practices, s.a. use of male varieties derived from seed, use of wild Pistacia species to boost pollination and hence the fruit setting, use of natural populations of wild Pistacia (P. atlantica) as rootstock due to their well known resistance to stony and calcareous soils.

最近在农场栽培无花果技术的改变更加导致作物的多样性减少。25年前，无花果多样性通过多种栽培保持在很高的水平（源于种子的雄性物种采用，野生开心果物种改善授粉的采用，自然野生开心果作为根茎的采用——因为他们已知很好的抵抗多石和石灰性土壤的能力，等等

The coverages and densities of Plantago virginica populations in different inhabiting periods in the campus of Zheijiang Normal University were surveyed by the successive sampling.

采用连续样方法，分别调查了浙江师大校园内不同定居阶段和生境特点的北美车前种群密度和盖度，以此为基础，计算了北美车前种群分布的偏离系数，并进行了种群的格局规模和格局纹理分析。

Plants and plantlike organisms not only pervade nearly every habitat on earth, they are of central importance to every ecosystem and to human populations.

植物和类似植物的有机体不只是分布於地球的每一个产地，它们对於每一个生态系统及人口极具重要性。

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。