In the end , this paper evaluates the geological environment of reservoir with the grey system . on the base of lithology , topography , geological structure and geohazards , this paper divides the reservoir to two parts , and every part is divided to three sub - parts 最后，本文分别运用宏观定性和灰色聚类定量评价了积石峡水电站的地质环境质量，宏观定性分区主要依据地形地貌、岩性、地质构造和不良地质现象的发育程度，将积石峡水电站分为两个大区，各大区又分出三个亚区。
On the basis of data collection and analyse , the paper draws lessons from the built bridge and the newest research achievement , and studies the optimal design theory and method of the continuous rigid - frame bridge with double thin - wall flexible piers which especially adapts to landform and transportation development condition in the western regions 在资料的收集和分析基础上，借鉴已建成的实桥资料和最新的研究结果，对适合我国西部地形地貌及交通建设条件的双薄壁墩连续刚构桥的优化设计理论与方法进行了研究。
The old two dimensional gis has been used widely in the power systems and become more functional . but its traditional means of using symbols to express buildings and geographic environment does n ' t simulate the true terrain near the power lines and electric facilities , and does n ' t give the maintenance men the true information of their working surroundings 传统的二维的电力企业地理信息系统已由技术研究阶段进入大规模使用阶段，功能日益完善，但是其简单的几何图形加注记的形式不能真实的反映电力线路、设备设施周遭的地形地貌，不能为线路、设备的巡视、检修人员提供真实的工作环境信息。
So , combining the characteristic of the lu " an mine area , the author first introduce its position terrace and geological composition water geology and the sociological economy condition , and make a detail statistic analysis of the current land resource in the area . through this , the author gets the damage type damage degree and damage area of the land in this area , and make a prediction of the damage condition in the coming ten years 为此，本论文结合潞安矿区的特点，首先对其所处的地理位置、地形地貌及地层地质构造、水文地质及矿区的社会经济概况作了简单的介绍，然后对本矿区现有的土地资源作了较为详细的统计分析，得出了本矿区土地的破坏类型、破坏程度及破坏面积，并对以后近十年的破坏情况进行了预测。
Chapters wee , four five and six are dealt with tbiough " typologized " descriptions and analyses . the author holds that the aspects of geography , ecology culture , social and ethnic relations can explain the background complexity in southwest china , making the historical evolvemeflt of local markct atemely complicated 作者认为，由于我国西南地区在地形地貌、生态环境、人文社会和民族关系等方面，都存在着极其复杂的多样性背景，因此，该地区集贸市场的具体的历史形成过程，也就是非常复杂和具有多样性的。
With the development of computer technology in hydrographic field , usage of many kinds of advanced and complicate algorithms is not a problem . . but because of complexity of geography , acquirement of primitive data needed in hydrographic calculation is still hard to tackle , for example , the length of river segment , the width of every node of every river segment 随着计算机技术的发展，在水文学及水资源学科，运用各种先进、复杂的专业算法求解已经不成问题，但由于地形地貌的复杂性，水文计算中所需的原始资料，如河段的长度，河段各断面上各个节点处的河宽等数据的人工实地采集工作仍然是很费时费力的事。
The millimeter has the largest frequency band and the highest velocity of communication , but it has the highest cost and technical defaults : multi - path effect , reflect and scatter caused by cloud , smoke , water - dropping , the buildings , the grounds and its shape , the interference caus ed by the thunder , the complexity of device , difficult maintenance , and so on . now the band of the leakage coaxial line is up to 3ghz , leakage coaxial line has some advantages : good adaptability to cloud , smoke , water - dropping , the buildings , the grounds and its shapes , good steady field , it has some technical defaults : lower resolution for location and measuring velocity , the more complex of its sending - receiving relay devices , weak anti - interference , the strict demand for the hole size in the line , the cleaner work environment and the higher cost 毫米波具有最大的带宽和最高的通信速率，但也有最高的成本要求和较难克服的技术问题，即传播的多径效应，降水、云雾、地形、地貌、建筑物等的反射散射，打雷时的严重干扰，设备复杂，维护困难等等；泄漏同轴电缆的带宽目前已做到3ghz ，具有对地形地貌建筑物的适应性强，场强稳定，但它的定位测速精度低，它的收发中继设备较复杂，抗干扰能力低，电缆上的开槽有着严格的尺寸要求，工作环境要求清洁，成本较高；传统无线感应技术具有结构简单，成本低廉，维护方便，定位精度较高的优点，但是，它没有抗干扰能力。
Through analysing the topography and landforms , rocks , geological structure and regional crust stability , etc , the geological condition of project on moving and settling construction land in nanan village of baihe township , sichuan jiuzhaigou county , status assesment , forcasting assessment and comprehensive regional assessment about the geological hazard of this site are made and also the conclusion and suggestion are given 摘要通过对四川省九寨沟县白河乡南岸村搬迁安置建设用地的地形地貌、地层岩性、地质构造与区域地壳稳定性等工程地质条件的分析，对该场地的地质灾害危险性做出了现状评估、预测评估及综合分区评估；并提出了结论与建议。
For a long time past , all of the interpretation results from gis data have been displayed or mapped by having resort to 2d and static approach . that creates difficulty for people to tell immediately and positively what the overall results means about the terrain surface . also , the relevant information obtained could not be brought into its full play 长期以来，地理信息系统资料的分析解释成果局限于二维静态表达方式，它给人们直接、完整、准确地理解与感受成果所反映的地表地形地貌情况造成了困难，也限制了资料的充分利用。
The system covers 3d gis , virtual reality , and visualization in scientific computing . with the combination of the electric grid information and the 3d geographic information , this system can provide the real image of the electric grid and the environment around it . using this system we can get all - round analysis results and obtain comprehensive information 本系统以三维地理信息技术、虚拟现实技术和科学可视化技术为支撑，真实地再现了输电线路周围的地形地貌、输电设备，实现了输电线路信息和地理信息很好的结合，从而实现了输电线路、电力设备的浏览、编辑、管理、查询和图表的显示输出等功能。
