虚工序的实用画法

The Practical Method of Drawing a Dummy Activity

研究虚工序的实用画法。本文给出了在绘图时虚工序的程序化的简洁画法，然后又给出了目前人们还没研究的网络调整时的虚工序的实用画法。并进一步给出了“多者先提原则”和“冗余原则”，使之能够大多数情况下不但实用而且能够最优。

This article deals with the practical method instead of the optimal method of drawing a dummy activity.First,the article illustrated the simplest programmed drawing method of a dummy activity.Second,it discussed the practical drawing method,which had not been mentioned worldwide yet,of a dummy activity when adjusting the network chart.Furthermore,it put forward the idea of 'the most,the first principle',and the 'redundency principle',which,in most cases,are not only practical but also optimal.