For conifer forest, it was largely influenced by rugged terrain and it was difficult to simulate its microwave backscattering.

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At last, the dissertation analyzes the problems in these two methods and gives some advice on construction design in local sites.

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The greater part of the country is mountainous and has a continental climate.

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Integrating with the continuous level of detail of geometry mesh, we present an criteria for selecting an appropriate node on the texture the quadtree, and rendering the mesh with the corresponding quadtree texture.

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The advanced method about tracing contour line was used to draw the contour...

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To develop a 3D contour simulation system to deal with CAD contour map on the platform of this data interface.

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By the array data,the whole contour map was divided into independent polygon regions and the DEM was established.

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The contour map by Ordinary Kriging method showed that the spatial distribution of values of the soil available Si were spots in evidence.

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To read the contour map, people must understand the relationship between the terrain and the contour map, including the change of gradient and depth of space.

而閱讀等高線圖首重要先了解地形與等高線圖的關(guān)系，其中包含坡形的變化及空間深度變化91九色熟女大屁股。

For instance,(1) mountain terrain map: displaying the terrain and topography, is 3D emulation of earth's surface, is convenient for customer to look into the physiognomy, and check the data of input;(2) contradistinguish map of mine well: displaying opposite position relation of the earths surface and workface, user can analysis surface movement and distortion value at every positions of the workface with the map;(3) 3D prediction model: displaying workface, survey dots, survey lines, terrain, movement and distortion in a same map with 3D graphics, revealing the relations of every elements' position;(4) isoline graphics: displaying the value of height, subsidence, incline, movement and distortion with different colors, and giving the value of every color at the side of the map;(5) color cloud diagram: revealing every targets with colors, coloring every point in the map with the color corresponding the value of height, subsidence, incline, movement and distortion and form transitional color in color cloud diagram.

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