As the generalization of topographic data, thematic data generalization needs the support of generalization knowledge to satisfy the use requirements and reflect the main geographic nature.
与地形数据综合一样，专题数据综合需要依据一定的综合规则来保障数据综合围绕应用的需求、反映主要地理特征。
As the generalization of topographic data, thematic data generalization needs the support of generalization knowledge to satisfy the use requirements and reflect the main geographic nature.
与地形数据综合一样，专题数据综合需要依据一定的综合规则来保障数据综合围绕应用的需求、反映主要地理特征。
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