查询词典 coverage

The analysis results for community species component and plant diversity showed that exclusion did change the species component and increase plant diversity remarkably, while the indicateor life-form structure, palatability analysis indicated that community for old exclusion is becoming perennity and unpalatability, whereas community for comparative exclusion is under stable non-equilibrium condition, in the view of vegetation coverage, mean height, biomass, palatability of plant composition, community for old exclusion has lower than new, comparative exclusion which proves partly that long-term exclusion can not increase grazing values for semi-arid rangeland.

对3种封育措施群落组成和生物多样性的分析结果表明，封育改变了群落的组成成分并增加了生物多样性，同时对群落植物的生活型、饲用价值分析计算结果则显示，老封育的群落植物逐渐向多年生发展，放牧价值开始降低，而对照区则明显处于一种非平衡的稳定状态。从3种措施植被的盖度、高度、生物量和饲用价值来看，老封育区均低于新封育区和对照区，表明长期封育不利于促进并提高草场的放牧利用价值。

Although much effort has been exerted to set up artificial vegetation coverage since the establishment of the People's Republic of China, the trend of desertification and soil loss is still unreversed.

建国后虽然进行了较大规模的人工林草植被建设以及以小流域为单元的综合治理，但水土流失和土地退化总的趋势并没有得到扭转，而且人工林草植被造成土壤干燥化，进一步加剧了生态环境的脆弱性。

The results indicated that there are has 21 kinds of alien invasive plant species which belonging to 21 generas and 13 families in Xiushan region, the alien plants has an important influence on the area where change farmland into woodland and the farm land that the condition of being unseeded, and the total coverage of the alien plant mostly reached 100%.

11入侵种是指在引入地建立了种群，改变或威胁本地生物多样性，对生态系统的结构造成了明显的损害和影响的外来种。u 1入侵植物就是指具有从原来的分布区域扩展到一个新的地区，在新的区域里其后代可以繁。。。。。。

In developing countries, the potential benefits of water demand-side management programs are huge in terms of money saved and ecological damage avoided, as well as freeing up water supply to extend coverage to the unserved.

在开发中国家，水的分配经营的项目上有相当大的潜力，举凡金钱的节省与生态伤害的避免，而且可以将水的服务范围扩大。

The results presented in this paper should be coupled to the uplink coverage investigations to get balanced system results.

该论文得出结论应与上行链路的覆盖研究结合起来获得平衡系统的结论。

The plant community composition changed and the community coverage increased over the wetland succession from primary swamp, through swampy meadow, to meadow. The number of associated species increased, while the dominant species abundances decreased. Through succession, the content of soil organic matter and total nitrogen declined. In contrast, the soil enzyme activity of catalase, protease and invertase increased; however urase declined.

随着湿地原生沼泽向沼泽化草甸、草甸的演替，湿地植物群落盖度增加、物种组成增多，群落优势种优势度减小，伴生种数量增加，植物多样性呈增加趋势；湿地土壤有机质、全氮含量不断减少，过氧化氢酶、蛋白酶、蔗糖酶活性增加，脲酶活性降低。

Both the underpotential-coverage and the underpotential-electrosorption valency relationships were analyzed, and the interactional properties between the deposit and substrate were obtained.

据此， 分析了单原子层覆盖度以及电吸附价与欠电势之间的相互关系，获得了沉积物与衬底之间干涉特性。

The two basic principles of flap coverage are:(1) to move available tissue with its intact circulation from an area of relative excess to the area of deficiency, and (2) to optimize vascularity of the flap.

皮瓣修复的两条基本原则：(1)将更多可用的、循环通畅的组织从相对过剩区移植到缺损区(2)最大限度的增加皮瓣的血液供应。

To alleviate the problem that codebook generated by Linde-Buzo-Gray algorithm includes a lot of invalid or identical codevectors in vector quantization. a coverage density based LBG algorithm is proposed.

针对矢量量化中Linde-Buzo-Gray算法产生大量无效或重复码向量问题，提出了一种基于覆盖域密度分割码向量方法。

The sixth part: Studies on the dynamic changes of soil retention function value of ecosystem in YUYANG District. Utilized ERDAS8. 5 to interpret the remote sensing image and get LUCC data and vegetation information of YUYANG District. Utilized R2V5. 5 to digitize administrative map, topographic map, vegetation picture, soil distribution map and meteorological website map. Utilized ARCINFOR8. 3 to change every digitization layer to the same projection, to generate Tyson polygon, to structure DEM and do vector polygon overlay. Utilized ARC VIE W3. 3 to obtain the grid data topographic slope and slope length from DEM data of YUYANG District, and then, turned every coverage layer into grid layer and do grid polygon overlay to gain data about dynamic changes of value of soil retention of ecosystem in YUYANG District, at last, the author analyzed the features of the spatial-temporal changes and its reason.The seventh part: Studies on the dynamic changes of fixing drifting sand against wind function value of ecosystem in YUYANG District.

第六部分：榆阳区生态系统土壤保持功能价值动态变化研究；利用ERDAS8.5对遥感数据进行解译获得榆阳区土地利用数据和植被信息，利用R2V5.5数字化榆阳区政区图、地形图、植被图、土壤分布图及气象站点分布图，利用ARCINFOR8.3对各数字化图层进行投影转换、泰森多边形生成、DEM构建和叠加分析，利用ARCVIEW3.3从DEM数据中获取榆阳区的坡度、坡长面域数据，并将上述各图层格网化，然后通过栅格图层叠加分析和代数运算获取榆阳区生态系统土壤保持功能物质量和价值量时空动态变化数据，最后分析了其变化的时空特点及形成原因。

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。