...t sales):每单位货品的检查成本(inspecting cost):缺货期间缺货数量容许欠拨(backordered)的比例, [0,1]:瑕疵率(defective rate), [0,1], 随机变量,且平均数为,变异数为;= 机率密度函数(p.d.f.
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Reduce defective rate 减低不良率
fuzzy defective rate 模糊缺陷率
Casting defective rate 铸件废品率
Manufacture defective rate 制造不良率
process average defective rate 过程平均不合格品率
Statistics for quality status on a regular basis, such as NCR for product, subcontractor's defective rate etc.
质量状态的定期统计，如产品NCR，分包商的缺陷率等。
The invention is capable of effectively controlling geometric precision of rolling ring and reducing defective rate of the rolling ring.
本发明能够有效的控制轧制环件的几何精度，降低轧制环件废次品率。
Numerical example shows that the optimal order quantity increases and maximization profit decreases as the expected value of fuzzy random defective rate increase.
算例分析表明，随着模糊随机缺陷率期望值的增大，最优订货量增大，最大利润相应减少。
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