For all of the above discussion to be practical, the team must find a way to compute the variance of the project parameters.
要想将上面所讨论的所有内容都成为可实行的，团队必须找到一个计算项目参数方差的方法。
Clearly, as the variance in the estimates of project parameters increases, the likelihood of completing the project successfully decreases.
很明显，随着项目参数估计中方差的增加，成功完成项目的可能性就减少。
Combined with practical project, parameters of 'double control 'are presented at the same time, which can be referred in the Theoretic Investigation and design of engineering.
同时，结合工程应用特点，给出了参数的取值范围，可供理论研究、工程设计与应用参考。
Combined with practical project, parameters of 'double control 'are presented at the same time, which can be referred in the Theoretic Investigation and design of engineering.
同时，结合工程应用特点，给出了参数的取值范围，可供理论研究、工程设计与应用参考。
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