高压冲压装置
high voltage impulse test unit
光亮软钢六角冲压螺丝帽
bright mild steel hexagonal pressed nut
板材冲压成形
sheet metals stamping
punch and formation of sheets
板料冲压数值模拟
Numerical Simulation for Sheet Stamping
泵叶轮冲压焊接工艺
Study on Stamping and Welding for Impeller
薄板冲压成形
sheet metal punching forming
Sheet metal forming