Real game engines use this pattern (or its 3D cousin, the Octree) for broad-phase collision detection: the quadtree quickly identifies candidate pairs, and a more expensive narrow-phase check tests the actual geometry.
1987年，松下又与北京市和电子部等下属的4家企业合资成立北京松下彩色显像管有限公司，这也是当时投资规模最大的中日合资企业。
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本书凡十五“记”，除《神龙记》《越中记》两篇以群像手法写神龙元年的“珠英学士”诗人群和大历年间的南方诗人群外，其余各篇，分别聚焦于王勃、杨炯、骆宾王、陈子昂、宋之问、李白、杜甫、元稹、白居易、李绅、韩愈、孟郊、李贺。诗人们前后相续的活动时间，基本上涵盖文学史的初唐、盛唐和中晚唐，读者自可把它读作一部以人物结构的唐诗小史。
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