The introduce of the Pre-control chart is analysed and its format application rules and probability analysis are discussed in this paper.
本文分析了预控图的提出，论述了预控图的格式、使用规则和概率分析。
The introduce of the Pre-control chart is analysed and its format application rules and probability analysis are discussed in this paper.
本文分析了预控图的提出，论述了预控图的格式、使用规则和概率分析。
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