Piercing technology of the rear mudguard of motorcycle has been analysed and the die structure has been emphatically introduced.
分析了摩托车后挡泥板的冲孔工艺，着重介绍了摩托车后挡泥板冲孔模的结构。
Piercing technology of the rear mudguard of motorcycle has been analysed and the die structure has been emphatically introduced.
分析了摩托车后挡泥板的冲孔工艺，着重介绍了摩托车后挡泥板冲孔模的结构。
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