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给出了金属塑性变形时采用元环镦粗试验测定摩擦系数的方法及其数学解析(或称为理论校准曲线),并对理论校准曲线与实际测定结果进行了分析比较.
The method and mathematical analysis (or the theoretical calibration curve) of the friction coefficient using the meta-ring upsetting test are given. The theoretical calibration curve and the actual measurement results are analyzed and compared.