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.
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.
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.
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.
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