人 民 网 版 权 所 有 ，未 经 书 面 授 权 禁 止 使 用
Последние новости
。WPS官方版本下载是该领域的重要参考
The spatial view (the grid of rectangles) and the tree view (the hierarchy of nodes) represent the same structure. Searching for a point means walking down the tree: at each node, you check which of the four children contains your target coordinate and recurse into that child. You never visit the other three.
Screen resolution
"The quality and reliability is very important for human safety. We have a lot of technology for that and a lot of experience for that."