For caculate GR&R, we should focus on A,E and P at the same time when we are trying to decide MSA is OK or not, and the alue of P is just represents the ariation of 10parts, but not to re ...

• MSA的目的是分析和确定测量系统的能力，其中的量具的1/10是一个基础性的规则，这个1/10是基于过程变差（通常也就是通过公差带来辨别的）。