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在产品抽样分析的基础上研究了盘式飞机刹车摩擦片零件的变形规律及系统误差，对模具进行补偿设计。经数十批产品统计，次品率由５０％下降至３％。
Based on the product sampling analysis, the deformation rules and system errors of disc brake lining parts were studied, and the mold design was compensated. After dozens of product statistics, the defective rate dropped from 50% to 3%.