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本文从改善工程质量入手，研究了多品种多批次铸造生产质量控制的特点，论述了主成分分析及主成分控制图在多品种多批次铸造生产中的应用。
This article starts with improving the project quality, and studies the characteristics of multi-batch and multi-lot production quality control. It also discusses the application of principal component analysis and principal component control chart in multi-batch and multi-batch casting.