Apparently, spatial operation is a very important part of GIS.
显然，空间运算是GIS系统相当重要的部分。
Its efficiency is directly decided by the main operation and spatial data structure.
空间分析的效率由空间数据结构和主要空间操作所决定。
Its efficiency is directly decided by the main operation and spatial data structure.
空间分析的效率由空间数据结构和主要空间操作所决定。
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