Querying spatial dada is usually concerned with space position. Spatial dada need special multi-dimensional access method.

空间数据的查询通常与空间位置有关，需要特殊的多维存取方法。

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We use a space coordinate method to position and point the target and align the laser beam, and use an off-focus radius-finding technique to find the laser focus.

详细描述了神光装置激光聚变物理实验靶瞄准定位系统的原理和结构，提出了“空间坐标法”进行靶定位和靶瞄准，利用“离焦定半径”完成了激光调焦。

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The parallel approaching method based on position signals of the line of sight (LOS) is often used in control of approaching phase of the space rendezvous and berthing.

空间交会停靠段的控制经常采用的一种方法是基于视线位置信息的平行接近法。

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