查询词典 decrease in population

According to absolute number of population, it is still a relatively smaller nationality of a population scale.

从人口绝对数来看，仍是一个人口规模相对较小的民族。

Urban population accounted for more than 86% of the country's population.

城市人口占全国人口的86％以上。

The changes of population density of Rhizosphere bacteria, fungi and actinomyces, and the types and population density of nitrogen-fixing bacteria, phosphobacteria and potassium-bacteria in different types of soils were studied.

研究了不同肥力烟区根际细菌、真菌和根际放线菌的数量变化，以及固氮细菌、磷细菌和钾细菌的数量和种类的变化。

But Afrikaans is commonly spoken by most of the black population and by 60% of the white population.

黑人和60％的白人使用南非荷兰语，德语和一些本地语言也通用。

Phenotypic plasticity and genetic differentiation are the two major strategies that alien invasive plants can adapt habitat heterogeneity.The polymorphism of invasive plants and the diversity of their dispersal way enable them occupying invaded habitat quickly,and dispersing with a far range.The breeding strategies that agamogenesis and amphigenesis can coexist and trade off according to the habitat and invasive stage can not only promote the invasive population erupted massively,but also directly affect the dispersal mechanism and regulate the genetic structure of the population.

表型可塑性和遗传分化是外来入侵植物对生境异质性的两种适应策略；散布体多态型和散布途径多种化，使外来入侵植物迅速占领入侵生境，并进行远距离扩散；无性生殖和有性生殖并存，并根据生境和入侵阶段权衡的繁育对策不仅使入侵种群大面积暴发成为可能，而且直接影响散布机制并对种群遗传结构具有调节作用。

The thesis discusses the survival measure with human aidance in reintroducing Père David's deer, such as: guarantee living space, diseases prevention, habitat restoration, population and habitat monitoring and community co-management. All the work is in order to restore the nature Père David's deer population in Dongting Lake region.

本文讨论了重引入麋鹿的人类协助生存措施：保证生存空间、防治疾病、生境改造、种群与生境监测、社区共管等，以期最终在洞庭湖湿地恢复麋鹿自然种群。

Common buckwheat ( F. esculentum ) is an allogamy crop, which is heterogony. There is heterogeneity in the species. To reveal the genetic diversity within cultivar population, In order to explore the sampling strategy that can reveal genetic diversity of buckwheat resources on the molecular level. PCR with intron-splice junction primers and long random primers was employed to reveal the genetic diversity within nine common buckwheat varieties and one tartary buckwheat cultivar population among different individuals. We established the sampling strategy in its genetic diversity study. Then we used the established sampling strategy, and the same PCR markers technique,to analysis the genetic diversity of 86 common buckwheat resources, the main results are as follows

甜荞是花柱异长自交不亲和的异花授粉作物，品种内存在一定的异质性，为了准确揭示甜荞遗传资源的遗传多样性，本研究采用因子分析法对86份甜荞遗传资源农艺性状数据进行分析；采用长随机引物和内含子切接点引物的PCR分子标记技术，对9个甜荞品种和1个苦荞品种不同个体间的遗传多样性进行了分析，建立了甜荞资源遗传多样性研究的取样策略；并利用建立的取样策略，采用PCR标记技术，对这86份甜荞资源的遗传多样性进行了分析，取得如下主要结果

Japan, as the antecessor of population aging in the world, has paid great efforts in dealing with the effect brought by population aging, accumulated a lot of experiences and achieved good results.

日本作为世界老龄化的"先行者"，在处理老龄化带来的影响作了很多的努力，积累了很多的经验，并取得了很好的效果。

On the base of classification of morphology, we studied morphology, cytology and molecular biology of Lilium sulphureum Baker apud Hook. f. in Yunnan By principles of population biology. We synthetically discussed intraspecific differentiation and evolution, from four biotic levels of population, individual, cell and gene.

本文在形态分类的基础上，根据居群生物学的原理和方法，对淡黄花百合的形态学、细胞学、分子生物学进行了研究，从居群、个体、细胞和基因四个层次综合探讨了该种植物的种内分化与进化。

Minimum spanning network of the 18 non-coding haplotypes was made using ARLEQUIN 2.0 and genetic distance was calculated based on COII gene sequences. The analysis showed that the population was interrelated and the Apis cerana population of China had expanded in history.v.

对mtDNA的18种非编码区单倍型利用ARLEQUIN 2.0进行最小跨度网络分析以及对COⅡ基因的遗传距离计算显示，中华蜜蜂种群内部关系密切，在历史上曾发生过群体扩张； 5。

Don not attempt to do something which you can not to do.

不要企图做那些办不到的事情。

The expression of CTGF and TNF-αweredetected by immunochemistry and the number of Clara Cells was calculated.

光镜下观察肺组织的病理变化，采用免疫组化染色观察肺组织中结缔组织生长因子和肿瘤坏死因子-α的表达和Clara细胞的数量。