It also discusses the theory about it, and puts forward three steps such as source data description, data structure mapping and data recombination.

对数字地图出版中多源矢量数据利用理论进行了探讨和研究，提出了源数据描述、数据结构映射和数据重组的解决方案。

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For each running process, the mapping between virtual and physical address is maintained in a data structure called the page table.

对于每个正在运行的进程，虚拟地址与物理地址之间的映射是在一个称作页表的数据结构中维护的。

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The URL is a little different, and the mapping back to the normalized data structure is a little different (see Download for all of the source code).

只是 URL 有点不一样，并且映射回常规化的数据结构的映射也有点不一样（所有源代码，参见 下载）。

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