To get appropriate electronic vector maps are often expensive and difficult during the development of a small and low cost GIS.

在低成本地理信息系统开发过程中，合适的电子矢量化地图的获得往往不太容易或费用高。

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To get appropriate electronic vector maps are often expensive and difficult during the development of a small and low cost GIS.

在低成本地理信息系统开发过程中，合适的电子矢量化地图的获得往往不太容易或费用高。

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