当杆的断面收缩率比杯形部分断面收缩率大得较多时，不适合直接用复合挤压成形。

When the shrinkage of the rod fracture surface much more than that of the cup part fracture surface, its formation by compound extrusion is not applicable.

youdao

当杆的断面收缩率比杯形部分断面收缩率大得较多时，不适合直接用复合挤压成形。

When the shrinkage of the rod fracture surface much more than that of the cup part fracture surface, its formation by compound extrusion is not applicable.

youdao