Grinding burn and the harm during the hard grinding of steel ball are elaborated, the purpose is to control the loss of production process and decrease the cost of product.
阐述钢球硬磨加工中产生的磨削烧伤并探讨磨削烧伤的危害性，目的是控制产品加工中的损耗，降低产品成本。
Control of its product sales, cost of sales and other data, including the specific management of the purchase products, product sales, product loss, and so on.
控制其产品销售、销售成本等数据，具体管理范围包括产品进货，产品销售，产品报损等。
In consideration of cost and whole life loss expectation of product, the whole life optimization design model with control parameter of dynamic reliability is proposed.
在同时考虑产品成本价值和全寿命期失效损失期望前提下，提出了以动态可靠度为控制参数的全寿命优化设计模型。
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