这三种模型在信息交换方式上各有优劣，它们适用的规模和范围也各有差异。
These three models are different in information exchange style and the range of application.
提出了基于GML空间数据交换和基于SVG的信息可视化模型。
The GML-based spatial data exchange model and SVG-based information visual model are proposed.
提出了基于GML空间数据交换和基于SVG的信息可视化模型。
The GML-based spatial data exchange model and SVG-based information visual model are proposed.
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