This paper analyzes the network structure of the hybrid fiber coax, such as star form network, tree form network, star tree form network and annular network.
分析了混合光纤同轴网的几种组网方式，如星形网、树形网、星树形网和环形网。
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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