On the most basic level, GIS is used as computer cartography, i . e . mapping.
在最基本的水平上, GIS被当作计算机地图制作使用, 也就是映射.
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The extraction of contour lines from Grid DEM is a primary function in computer - cartography ad GIS.
从规则高程格网中自动提取等高线是地理信息系统以及计算机制图的基本功能.
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