sample fraction defective 中文意思是什麼
sample fraction defective
解釋
樣本不良率-
Traditional methods for measuring fraction of nonconformities become inapplicable for those high quality processes since any manufacturing sample of reasonable size likely contains no defective product items
然而,由於在這些高質量製程(不良品種通常用百萬分之一?衡量單位)所取出適當大小的樣本中幾乎沒有不良品,因此常規用來衡量這些低不良率製程的方法變得沒有效率且不適用。
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