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R树索引
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R树索引
将B树向多维空间扩展的索引方法。它采用空间聚集的方式将相邻的空间实体划分在一起,组成更高一级的结点,直到所有实体组成一个根结点。是一种高效的空间索引。又称平衡树。
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archives appraisal working group
archives appraisal work organization
Archives Arrangement and Management
archives arrangement scheme
archives backup from different materials
archives backup from different places
archives box
archives building fire warning
archives business expenses
archives cabinet
archives catalog
Archiveschule Marburg
archives classification
Archives Classification in China
archives classification indexing
Archives Concerning Qing Dynasty Literary Inquisitions
Archives Concerning Sino-French Relations 1875~1908
Archives Concerning Sino-Japan Relations 1909-1912
Archives & Construction
archives content arrangement
archives depository Center
Archives Dictionary
archives file moved south
archives flow of state owned bankrupt enterprises
archives fumigation agent
科学参考收录了854744条科技类词条,基本涵盖了常见科技类参考文献及英语词汇的翻译,是科学学习和研究的有利工具。
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