A turbo - charged six sigma black belt from the production department overheard their discussion and prescribed some on - the - fly data mining based on vector analysis . they accepted her offer to demonstrate 制造部的6西格玛黑带人员无意中听到他们的讨论并且以矢量分析为基础指出了一些非工作的数据。他们接受他的建议并进行了认证。
