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Quadtrees are everywhere spatial data exists. Mapping services use quadtree-like tile pyramids to serve map tiles at different zoom levels (Bing's quadkey system, for example, addresses tiles as base-4 paths). Game engines use them for collision detection and visibility culling. Geographic information systems use spatial indexes to store and query spatial datasets. PostGIS uses GiST indexes (R-tree-style) for spatial queries on geometries, while PostgreSQL's core supports quadtree-like SP-GiST indexes for certain data types like points.，更多细节参见爱思助手下载最新版本
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04 给AI与电力从业者的关键启示对中美两国AI、电力、能源行业的普通人来说，这场变革不是遥远的新闻，而是饭碗与职业赛道的重新选择。