采用该方法成形的零件，表面光滑、无拉深压痕。
The parts shaped in this way are free of dents but with smooth surfaces.
外观：表面应平整光滑，无皱纹和裂纹，适量避免其它缺陷，如擦伤、压痕等，允许有少量斑点。
Requirement Appearance: surface should be flat and velvet, without wrinkle and crack, avoid other disfigurement, such as scratch, impress, a few spot is available.
外观：表面应平整光滑，无皱纹和裂纹，适量避免其它缺陷，如擦伤、压痕等，允许有少量斑点。
Requirement Appearance: surface should be flat and velvet, without wrinkle and crack, avoid other disfigurement, such as scratch, impress, a few spot is available.
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