根据货物运输作业过程的实际需求，提出动态车辆调配问题，明确给出确定性动态车辆调配问题的定义，并利用网络图对问题进行描述。
Under some demands in process of freight transportation, the deterministic dynamic vehicle allocation problem is brought forward and defined. And the network chart is used to depict this problem.
介绍了一种确定网络图关键线路的新方法——结点时差法。
This paper introduces a new method of determining the critical path of the network chart-node slack method.
该方法只需计算出结点最早开始时间和最迟结束时间，便可确定出网络图的关键线路。
This method only needs computing the earliest start -time and the lastest finish-time of the node. Thus you work it out.
该方法只需计算出结点最早开始时间和最迟结束时间，便可确定出网络图的关键线路。
This method only needs computing the earliest start -time and the lastest finish-time of the node. Thus you work it out.
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