三点估计 meaning in Chinese

three time estimates

The basic principle of earned value is introduced in this paper and the contents of project risk management are also included . based on analyzing of merits and shortcomings about earned value and risk management , it is likely to integrate them . the paper has a hot talk about the method of calculating the earned value indexes when the schedule of activity is fixed
接着,着重讨论了项目活动持续时间均服从pert三点估计时项目在各观察点的挣值绩效指标值的计算方法,给出了某一项目在该种情况下各观察点的最可能的挣值绩效指标值的仿真结果,并在分析了这些挣值绩效指标值的曲线特征的基础上,探讨了挣值管理中的风险控制问题。