计算表明，对于那些边界线短、域范围大的问题，这种方法特别显得有效。
The investigation also shows that this method is quite valid for the problem with a large domain and short boundary.
该方法还可用于公路规划设计中将地图中的等高线、边界线等转换为数据文件，便于使用计算机辅助计算、规划。
This method can be used in road design to changed the contour lines and sidelines to the data files in order to use computer aided calculating and planing.
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