本文还给出了一种简练的函数构造法，用该方法构造的函数能较好地逼近活动工期概率密度函数，方便了对计划网络图的计算机仿真运算。
It also gives a construction approach for approximating the probability density function of activity duration, which will facilitate the computer simulation of the PERT diagram.
应用母函数法研究问题，可以得到系列结果，这是一种辩证性、总括性以及构造性的思维方式。
That the study problem applying on the parent function method can get a series of results. This is a king of thinking with dialectical, sum up, and structural.
为何？大驼峰命名法用于标识可以通过构造函数实例化的对象。
Why? Upper camel case is conventional for identifying objects that can be instantiated using a constructor.
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