X-BAR&R的作用?X bar-R chart shows instability in range and in means with a clear trend.这段文字

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X-BAR&R的作用?X bar-R chart shows instability in range and in means with a clear trend.这段文字
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X-BAR&R的作用?X bar-R chart shows instability in range and in means with a clear trend.这段文字
X-BAR&R的作用?X bar-R chart shows instability in range and in means with a clear trend.这段文字

X-BAR&R的作用?X bar-R chart shows instability in range and in means with a clear trend.这段文字
(X Bar-R Charts) 品质管制图 反映的是在一定范围内的(制程的)不稳定性,其平均值则反映的是一个明显的(制程)趋势(即:是否偏离).