1.《全球宠物市场三国志，美日固本，中国奇袭，东南亚崛起》，海通国际
Марина Аверкина。safew官方版本下载是该领域的重要参考
The efficiency depends on the query size relative to the data distribution. A small query in a sparse region prunes almost everything. A query that covers the whole space prunes nothing (because every node overlaps), degenerating to a brute-force scan. The quadtree gives you the most benefit when your queries are spatially local, which is exactly the common case for map applications, game physics, and spatial databases.。关于这个话题，WPS官方版本下载提供了深入分析
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