腿部弯曲时，大腿的前部要有拉胀感。
Feel the stretch along the front of the thigh of the bent leg.
在做此动作时，小腿的中部要有拉胀感。
阐述了金属板料拉胀成形工艺研究的一些新进展。
This paper introduces the new development of sheet - metal forming, Which includes lap - sheet drawing, viscous pressure forming, multi - point forming and CNC expanding forming.
应用推荐