This study shows that GML can express spatial data information and is very effective to share the spatial information.

研究表明，GML可以表达空间数据信息，并有利于实现空间数据共享。

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Spatial information grid generates large amounts of data needed to be able to share it with user around the world.

空间信息网格项目数据量大，用户遍及各地，对数据文件的请求延时大、占大量带宽。

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