The third, considering of the rationality in spatial division with Voronoidiagram, an analysis in the spatial influences of the 38 cities.
在对大量相关文献研究的基础上，本文对城市综合实力评价和空间影响力问题作了进一步的研究。
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How to build VORONOIdiagram based on threaten locations, compute costs of flight routes, choose preliminary path and optimize path were discussed importantly.