By means of gear profile statistics to conduct the identification of gear manufacturing process system, a scientific and easy-operation method to assess and control gear quality is provided.

采用齿廓统计分析方法对加工工艺系统进行识别，可为齿轮质量的评定与控制提供更科学且易于操作的手段。

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Presents the principle of statistics process control, the judgement of state in statistical control for a process by means of control chart, and the analyses and improves process capability.

阐述统计过程控制的原理、应用控制图对过程作出统计稳态的判断，分析并提高过程能力。

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Analysis and control of working process of product by mathematical statistics, thus reached purpose that it is stable state and raise products quality.

运用数理统计技术对产品的加工过程进行分析与控制，以达到稳定和提高产品质量的目的。

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One was the world of statistics, measurement, rigor and process: an appealing array of tools that, in isolation, promised control and predictable outcomes.

FORBES: Innovation: W. Edwards Deming and John Keats Got It Right