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我厂新产品分时计度表上的大罩壳系铝件(如图1)。经计算,用二次以上拉深较为可靠，而二付拉深模具需6～7千元，而且
Our new product time-sharing meter on the big shell Department of aluminum (Figure 1). After calculation, more than two times more reliable drawing, and two pay deep drawing mold to be 6 to 7 thousand dollars, and