...： CAD平台;;大比例尺地形图;;变化检测;;变化信息文件;;程序实现 [gap=650]Keywords: CAD platform;large scale topographic map;change detection;change information files;program implementation ..
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the large scale topographic map 大比例尺地形图
The precision of a large scale topographic map is systematically analyzed, which is measured and drawn with the help of coordinate point distributor for the distribution of the detailed points.
对采用坐标展点器展绘碎部点坐标所测绘的大比例尺地形图的精度进行了系统地分析，并定量地给出了采用不同测距方式展点测图的点位中误差。
In order to raise the precision of collage, not less than 16 control points are required for each sheet of the large-scale topographic map, and beside...
为了提高拼贴精度，大比例尺地形图每幅除不少于16个控制点外，更重要的是多选用方里线(或经纬线)交点作为拼贴控制用。
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