作为把质量管理理念引入日本的两位美国先驱者之一，约瑟夫•朱兰在其统计工作的基础上，发现了用于改善质量的方法西格玛。
This is an approach to quality improvement based on the statistical work of Joseph Juran, one of two American pioneers of quality management in Japan.
运用QC（质量管理）方法，并结合统计分析，查找出了影响气孔的主要因素。
With the application of QC method, combined with the mathematical statistical analysis, The main factors that affect the gas hole are found.
本文提出了引用质量管理的统计方法设置综合绩效指标和制订员工改进计划。
This paper designs compositive performance indicator and improved plans by statistical method of quality control.
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