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宗烁 @qzone_765C59645008-16-2016
将汽车排气管弯成符合图样要求的有一定曲率、角度、形状的不锈钢弯管的工艺称为弯曲成形。弯曲成形的薄壁不锈钢管褶皱状态如图1所...more
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