Research on the paper will importantly focus on:Firstly, we will construct the mathematic model of optimizing of physical distribution routing problem with time windows.
此部分是本文研究的重点：首先，建立有时间窗物流配送路径优化问题的数学模型基础。
The research methods of the article focus on theory comparison and actuarial mathematic analysis.
本文的研究方法为理论对比研究和精算数学实证研究。
The view that mathematic is a kind of cultural system comes to be the focus in the academic circles.
数学作为一种文化体系的观点，也正成为学术界的热点。
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