Viewing from the unityof sketch plan and executive plan, the paper also expounds the PERT's function and its economical effects with some examples.
本文还从轮廓计划和执行计划统一的角度，对功能进行了论述，通过实例论述了经济效果。
2
Thus, the modern commercial advertisement plan is a system engineering, the unity in harmony through it of each subsystem, round a clear goal, make the advertising activity make the best result.