铁基薄壁衬套采用单向、双向压制方法，都存在着零件的密度和硬度沿高度方向分布不均匀的情况。

There are difference of density and hardness in iron base bushings with thin walls by single- and double-pressing process along their longitudinal direction.

youdao

铁基薄壁衬套采用单向、双向压制方法，都存在着零件的密度和硬度沿高度方向分布不均匀的情况。

There are difference of density and hardness in iron base bushings with thin walls by single- and double-pressing process along their longitudinal direction.

youdao