检查几何形状和光栅的一致性，如果有必要用电子生成网格的装置。

Checking geometry and the congruency of raster, by means of an electronically generated grid, if necessary.

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这个应用程序的功能仅仅检查用GML实例文档编码的地理特性是否包含至少一个几何元素。

The functionality of the application is simply to check whether the geographic features encoded in a GML instance document contains at least one geometry element.

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不断地检查 if x in otherlist 会导致效率成 big-O 式几何级数递减；在两个固定排序的列表之间进行平行匹配的效率要高得多。

Constantly asking if x in otherlist runs into geometric big-O inefficiencies; marching in parallel between two stably-sorted lists is more efficient. For example

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