本文通过选择合适的“参考点”和提出“空间级”概念，给出了多维空间的几何意义。

By choosing the suitable "referenced point" and defining "space Grade", this article gives geometry meaning to multi - dimension space.

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如果几何图形按照ESRI几何图形格式编码，那么它实际上需要3.1 MB的磁盘空间(请参阅参考资料一节，了解关于ESRI几何图形格式的更多信息)。

If the geometry is encoded in the ESRI shape format, it actually requires 3.1 MB of disk space (see the Resources section for more information on ESRI shape format).

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参考资料来源于rcs减缩、无线电波段、接触几何和典型威胁系统见附录a。

Reference data for RCS scales, radio-frequency bands, engagement geometries, and representative threat systems are summarised in Annex a.

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