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戴明华

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一种降低冲压件侧壁翘曲回弹的活动式拉延筋装置及其压边工艺

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First Author:赵坤民

Disigner of the Invention:huping,daiminghua,金荣,黄波

Application Number:CN103341556A

Authorization number:CN201310261698.8

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