常見例句Keywords rigid visco-plastic FEM, cannonball body semiproduct, precision forming, pressing, punching, ironing, shell nosing; 剛（粘）塑性有限元法;炮彈彈體毛坯;精密成形;壓型;沖孔;引伸;收口;semiproduct management 半成品管理 返回 semiproduct