DEM is a digital expression of landform surface, and is of great advantage to three-dimensional visualization and statistical analysis.
DEM是地形表面的数字表达，易于三维可视化和统计分析。
DEM is a digital expression of landform surface, and is of great advantage to three-dimensional visualization and statistical analysis.
DEM是地形表面的数字表达，易于三维可视化和统计分析。
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