优势种

Therefore, the present study is more of practical significance.Guided by the trade competition analyses and competition advantage theory put forward by Prof. Michael Porter, the present paper has conducted an analysis over the five competition forces facing the construction publication trade after Chinas accedence to WTO.

如何面对竞争并在竞争中取得优势，我国的出版企业面临着三种战略选择，即成本领先战略、差异化战略、目标聚焦战略，在分析上述战略的基础上，本文提出建筑类出版社必须实施差异化战略取得竞争优势的结论。

The floristic components have character as following: geographic -al elements of species is relatively simple;there are more species of world distributi -on and tropical genera,and there have world blazon predestined relationship and tropical predestined relationship.Composite,standing grain,legumina have absolutely predominance make of the backbone of floristic.Seed plants are mainly made up of herbage plants.

种子植物区系成分具有以下特点：种的地理成分相对简单；表现出明显的亚热带特征，并具有热带向温带过渡的特点；菊科、禾本科、豆科占有绝对优势，构成植物区系的骨干；种子植物主要由草本植物组成，草本植物占绝对优势。

Green bristlegrass was dominant species,and fat hen and cockspur grass were subdominant species.

研究区内有野生草本植物25种，其中优势种群是狗尾草种群，亚优势种群为灰菜、稗草种群。

The results indicated that the prey items of the plaice included 11 groups or 38 prey species, but only Crustacea and Lamellibranchia were the most important prey groups, accounting for 99% of the total food composition by percentage of index of relative importance. Euphausia pacific, Crangon affinis and Tellinidae were the dominant prey species.

结果表明：高眼鲽摄食的食物种类包括11类38种，其中甲壳类和瓣鳃类为优势饵料类群，共占食物相对重要性指数百分比的99%；食物中的优势饵料种类为太平洋磷虾、脊腹褐虾和樱蛤。

The results indicae that the dominant species is Potamogeton malaianus Miq in the six aquatic plants with maximum fresh unit biomass of 6131 g/m^2, accounting for 61.59% of the total sample; The sub-dominant species is Egeria densa Pianch with maximum fresh unit biomass 3716 g/m^2, accounting for 24.78% of the total sample.

测定结果表明：在采集到的6种水草中竹叶眼子菜为优势种群，单位生物量最高为6131 g/平方公尺，占全部样本总量的61.59%；水蕴草为次优势种群，单位生物量最高为3716 g/平方公尺，占全部样本总量的24.78%。

The firms located in industrial cluster are important ties that linked the local industrial cluster and the global production network. They are as well as the micro-dynamics for the clusters' upgrading and evolution in the context of economic globalization. The existing researches on industrial cluster almost focus on the cluster's competitive advantages as a whole unit, which has supposed the firms in clusters are homogeneous and opportunity equipotent that can get extra advantages compared to the un-clustered firms.

集群企业正成为联系地方产业集群与全球生产网络的重要纽带，是经济全球化背景下产业集群升级和演进的微观动力；从已有的集群理论研究成果来看，目前的研究主要集中于集群整体层面，研究的焦点是对集群整体的竞争优势进行探讨，集群企业被假定为是具有同质性和机会均等性的，相对于非集群企业可以获得一种"非对称"的特殊竞争优势。

A clone from each genotype was randomly selected as representative for sequencing. The obtained 16S rDNA gene sequences had a similarity of 87%-100% with those in the GenBank (www. ncbi. nlm. nih. gov), and more than half of them had a similarity lower than 97%, being of new species. Based on phylogenetic analysis, the bacteria in the two soils were classified into 10 groups, with 5 groups in common. The dominant bacterial groups in the two soils differed obviously. In primeval forest soil, the dominant group was Proteobacteria, which had 39 genotypes, occupying 58.0% of all the clones; while in the soil of degraded ecosystem the dominant groups were Acidobacteria and Proteobacteria, which had 19 and 15 genotypes occupying 32.5% and 30.5% of all the clones, respectively. In the soil of degraded ecosystem, Proteobacteria group decreased while Acidobacteria group increased markedly, compared with those in primeval forest soil.

从每种基因型中随机选择一个克隆子作为代表进行测序分析，所有序列与GenBank数据库中序列的同源性为87%~100%，且两样地中均有超过一半的基因型序列与数据库中已知序列同源性低于97%，属于分类在"种"地位上的新发现细菌；通过系统发育研究将两样地的细菌分为10大类群，两样地共同拥有5大类群，但两样地的细菌优势类群明显不同，原生土壤为Proteobacteria，含39种基因型，占总克隆子数的58.0%，退化生态系统土壤为Acidobacteria和Proteobacteria，分别含19种和15种基因型，占总克隆子数的32.5%和30.5%；与原生土壤细菌类群相比，退化生态系统土壤Proteobacteria类群明显减少，Acidobacteria类群明显增加。

Based on the discussion of the internal competitive prepotency , the competitive advantages of the five types of e-commerce companies are outlined .

在对企业内部竞争优势进行分析时，分别指出了五种开展电子商务的企业必备的竞争优势。

Besides, after this system has been brought into operation for 1 year, there was abundant ecology in the surroundings, and any ecological imbalance such as ecological singularization or species advantages has not happened due to the set-up of this system.

统合分析，本系统未来并没有铺设不透水布之必要性，且本系统运作ㄧ年之后，周遭生态丰富，并不会因为设置本系统，而造成生态单一化、某些物种优势化生态失衡的情况发生，植种结构有34科87种；两栖类有3科4种；爬虫类有6科10种；鱼类有4科8种，且有多种鸟类接近或进入本系统中，并且本系统排放水因溶氧较进流时增加，可改善河川水体因河川溶氧降低、水量减少而造成河中鱼类暴毙的窘境。

Methods The net treated by BASF pesticide, the net treated by BASF pesticide after washing twenty times and the net treated by Fendona TM recommended by WHO were used in treated area, and common military nets were selected in the control areas. Aedes vexans, the dominant species in Beiwan, was collected by mosquito aspirators and released into nets. The first knockdown time, medium knockdown time and total knockdown time were recorded, and then compare the knockdown time of 4 kinds of mosquito-net.

研究中选用经BASF药物处理蚊帐、20次洗涤的BASF药物处理蚊帐、5 ml有效成分10%的奋斗呐处理的普通蚊帐，普通军用蚊帐作为对照，在野外环境中用吸蚊器采集当地优势蚊种刺扰伊蚊分别放入4种处理蚊帐中，观察4种处理蚊帐对当地蚊虫的首数击倒、半数击倒、全数击倒时间，最后比较分析4种处理蚊帐对当地主要蚊种的快速击倒效果。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。