After the network plan technology based on PERT/CPM application for many years, it has obtained some successes, reduced the period of the project, but still has some flaws in plan function.

• 基于PERT／CPM的网络计划技术应用多年来，取得了一些成功，缩短了工期，但在计划功能上尚存在一定的缺陷。