In this case, conventional Shewhart type attribute control charts are not applied effectively in practice. 在这种情况下，常规的休哈特型计数控制图往往是失效的。
This paper discusses the principles for drawing water well performance control plot and its application in stabilizing oil production by water control. 该文在研究水井动态控制图绘制原理及其在控水稳油中的应用上作了有益的探索，并取得了明显的效果。
