何时采取局部措施或系统措施

通过分析过程输出可获得许多与过程实际性能有关的信息，如果能对得到的信息进行正确的分析，就可确定过程中是否在正常方式正确的分析，就可确定过程是否在正常方式下运行，过程不正常运行可能是普通原因或特殊原因，因此，为了使过程正常运行，需要针对性地采取系统措施或局部措施。

when local action or systemic action to taken

much information about the actual performance of the process can be obtained by studying the process output. If this information Is gathered and Interpreted correctly, it can show whether the process is being in usual and unusual manner.If action is needed It must be timely and approiate, or the gathered information is wasted. The reason resulting from unusual manner is generally common and special causes, so local actions and systemic actions are taken pertinently.