提出了一种简化的确定关键路径方法，该方法可分别运用于单代号和双代号网络图中。
This paper put forward a simplified method that can be used on activity on node network and activity on line network to identify the critical path of schedule.
将双代号网络计划放在时间坐标里，编制成“时标网络”，使网络图的识读变得容易。
The 'time scale network' was worked out by building the dual-code network plan into the time coordinate, which can make the network graph more readable.
本文介绍了网络计划技术的概念，阐述了双代号网络计划图和单代号网络计划图的特点。
In this paper, the concepts of network planning techniques is introduced at the beginning. The characteristics of dual code and single code network drawing is expounded.
双代号网络图中，虚工作和实工作有着本质的区别，其主要作用是传递工作之间的逻辑关系。
In the activity-on-arrow network, there are essential differences between positive activity and dummy activity.
在双代号网络图中，虚工作和实工作有着本质的区别，其主要作用是传递工作之间的逻辑关系。
In the activity-on-arrow network, there are essential differences between positive activity and dummy activity. The main function of dummy activity is to transfer the logical relationship in the work.
针对双代号网络图绘制困难的问题，介绍了绘图时虚箭线的判定方法，有利于快速、准确地成图。
In view of activity-on-arrow network drawing difficultly, describes the methods of determine the dummy arrow. It will enable the rapid and accurate drawing.
文章通过对双代号网络、单代号网络及时标网络的对照及论证，得出虚工作的时间参数可以不计算的结论。
With the demonstration and comparison of activity-on-arrow network and time-scaled network in this paper, proper conclusion is expected to drawn.
在分析传统时标网络图编制方法的基础上，通过编制实践，提出了一种实用改进型的双代号时标网络图的编制方法。
By analyzing the method of drawing up classical time - coordinate network figure, the authors present a practical improved drawing method in this paper.
在分析传统时标网络图编制方法的基础上，通过编制实践，提出了一种实用改进型的双代号时标网络图的编制方法。
By analyzing the method of drawing up classical time - coordinate network figure, the authors present a practical improved drawing method in this paper.
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