很多开发人员和地理信息系统(GIS)专家一直无法使用drawing Interchange Format (DXF)或“ drawing ” (dwg)格式的文件。

Many developers and geographic information system (GIS) professionals have been unable to use a drawing Interchange format (DXF) or "drawing" (DWG) file.

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GIS案例是决策者或研究人员使用地理信息系统辅助解决某类特定问题时所生成的特殊的案例。

GIS case is the special case while researcher solving some special kinds of problems using GIS.

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