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系统地阐述了Z_sσ控制方式的概念,探讨了控制方式与缺陷率的数量关系,在研究过程能力指数算例中,偶然发现了不用查表即能确定质量水平的公式。
The concept of Z_sσ control mode is systematically expounded. The quantitative relationship between control mode and defect rate is discussed. In the case study of process capability index, a formula to determine the quality level without looking up table is discovered by accident.