... 现实 actual, realistic, reality, actuality, real 现实几何图形 world geometry 现实情况 current state, current situation ...
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空间查询是展示局部数据访问(换句话说，现实中临近的几何图形常常被一起访问)的最好例子之一。
Spatial queries are one of the best examples to show locality of data access, in other words, geometries that are close to each other in the real world are often accessed together.
VRML(虚拟现实建模语言)也能生成三维的几何图形。
There is VRML (Virtual Reality Modeling Language) to produce the 3d images with geometry.
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