n.控制
We can also get the relationship of points.All of these can be used for controlment of production and can make the process of the production more smoothly. 从系统建立的决策树模型中，可以得到那些影响生产平稳性的关键位号点，也可以得到位号点之间的关系，这些都可以作为生产过程控制的依据。
