The compatibility permits the SQL standard, and expands the function of searching spatial data by SQL.
兼容国际SQL标准，并拓展使用SQL查询空间数据的功能。
The spatial lamination method proposed in this paper proves to be an effective way to solve the problem with high speed, good hardware compatibility and adjustable property.
通过使用空间分片的方法可以为浮点精度问题提供了一个解决途径。
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