Through the analyses of the grid index and the spatial object index, a structure of the spatial object boundary index based on wide grids is put forward.

在充分分析格网索引和空间对象范围索引的基础上，提出一种基于粗分格网的空间对象范围索引结构。

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According to the characteristics of spatial index of grids and R-tree, a hybrid structure of spatial multilevel index is presented based on grid and R-tree.

结合网格索引和R树索引的特点，提出了一种基于网格与R树的多级混合索引。

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According to the characteristics of spatial index of grids and R-tree, a hybrid structure of spatial multilevel index is presented based on grid and R-tree.

结合网格索引和R树索引的特点，提出了一种基于网格与R树的多级混合索引。

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