多样性

With the enhancement of maneuver ability, the abruptness and variety of maneuver are becoming major concern.

随着目标机动能力加强，机动的突发性和多样性更加突出。

The background survey and tracking survey of artificial reef area in Chenghai Laiwu were carried out before and after reefing in 2003 and 2007, respectively. The results indicated that after the deployment of artificial reefs, the biomass density of fishery resources increased by 25.63 times, which were much higher than before. The resources species was much more abundant; total number increased from 23 to 41, which increased by 0.78 times. The crab resources sharply increased by 1.75 times after artificial reef were deployed. Harpodon nehereus and Portunus sanguinolentus , which did not appeared in background survey, now became the dominant species in tracking survey. There were high diversity indexes in artificial reefs area and control area in tracking survey. In conclusion, the results indicated that the fish-aggregating effect of artificial reef site has improved a lot, and the community structure and the habitat environment have been significantly improved.

摘 要：2003和2007年分别对澄海莱芜人工鱼礁区进行了投礁前的本底调查和投礁后的跟踪调查，结果表明，投礁后礁区海域游泳生物的资源密度明显比投礁前高，增加了25.63倍；礁区海域各类资源种类均比投礁前丰富，总种数由投礁前的23种增加至41种，比投礁前增加了0.78倍，其中，蟹类种数增加最多，增加了1.75倍；在本底调查中没有出现的经济种类龙头鱼 Harpodon nehereus 和红星梭子蟹 Portunus sanguinolentus 在跟踪调查中已成为主要优势种；Shannon-Wienver多样性指数在礁区和对比区均比投礁前有所增加。

The avian species number, avian abundant grade, diversity, as well as similarity in four different habitats (hill, bottomland, water area, manual forest) are analyzed.

对山地、滩地、水域、人工林4种生境鸟类物种数、鸟类数量等级、多样性、鸟类群落间相似性进行了分析。

Protected area is situated in the North-South climate, flora, fauna intersection transition Qinling mountains, there are abundant, a large number of rare and endangered plant and animal species, biological diversity, which included in the national class Ⅰ protected animals giant panda, takin, Lin musk deer, leopard, golden eagles and other five kinds; included in the national Class Ⅱ protected animals have black bear, Chrysolophus pictus, blood pheasant, Syrmaticus reevesii, goral, giant salamander, such as 11 kinds.

保护区地处我国南北气候、植物区系、动物区系交汇过渡的秦岭山脉，蕴藏着种类丰富、数量众多的珍稀濒危动植物物种，生物多样性丰富，其中列入国家保护的Ⅰ类动物有大熊猫、羚牛、林麝、金钱豹、金雕等5种；列入国家Ⅱ类保护动物有黑熊、红腹锦鸡、血雉、白冠长尾雉、斑羚、大鲵等11种。

The living environment, ecological structure and species diversity of acidophilic microorganisms, and the effects of temperature and oxygen on those organisms are summarized in this paper.

综述了嗜酸微生物存在的环境、生态结构和微生物多样性，以及温度、氧对嗜酸微生物的影响。

Abstracts The living environment, ecological structure and species diversity of acidophilic microorganisms, and the effects of temperature and oxygen on those organisms are summarized in this paper.

综述了嗜酸微生物存在的环境、生态结构和微生物多样性，以及温度、氧对嗜酸微生物的影响。

To establish effective methods for selective isolation of acidophilic filamentous actinomycetes from acidic soils, and to investigate their genus and species diversity.

针对酸性土壤中的嗜酸丝状放线菌，建立有效的选择性分离方法，并了解其多样性。

Progress in the taxonomy of the actinomycetes and acidophilic actinomycetes was introduced in this paper. The diversity of acidophilic rare Actinomycetes from acidic soil was studied and a polyphasic study was undertaken to establish the taxonomic position of three soil isolates.

本文介绍了放线菌和嗜酸放线菌的分类学研究进展，研究了我国酸性土壤中稀有放线菌的生物多样性，并采用以分子分类、系统发育学分析、化学分类、形态特征和生理生化特性相结合的多相分类方法对3株土壤新分离菌株进行了分类学研究。

objectiveto keep the stability of issr_pcr and reliability of genetic diversity, sibship analysis and source assessing for aconitum carmichael dexb.

目的保证乌头issr-pcr的稳定性、提高对乌头遗传多样性，亲缘关系分析、种质鉴定的可靠性。

Three active restriction modes can provide more control selections for the active control bearing.

三种主动节流方式也为自主控制气体轴承提供了多样性选择。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐