Basing on the theory of single forming, the mathematical model of progressive forming of open-seam pipes is established.
在板料单次折弯成形理论的基础上，建立了直缝管筒逐步折弯成形的数学模型。
Basing on the theory of single forming, the mathematical model of progressive forming of open-seam pipes is established.
在板料单次折弯成形理论的基础上，建立了直缝管筒逐步折弯成形的数学模型。
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