介绍了快速货运中各种轴辐式网络及其特点，总结了轴辐式网络问题的研究现状，并对其研究趋势做出了分析。
The paper introduces all kinds of hub-and-spoke networks and their characteristics in express freight, describes the current situation of their research and analyzes their research trend.
介绍了快速货运中各种轴辐式网络及其特点，总结了轴辐式网络问题的研究现状，并对其研究趋势做出了分析。
The paper introduces all kinds of hub-and-spoke networks and their characteristics in express freight, describes the current situation of their research and analyzes their research trend.
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