这个过程被称作反向挤压就是因为金属的流动方向与推杆的移动方向相反。
It is termed backward because of the opposite direction of the flow of the metal to that of ram movement. Thus, the billet in the container remains stationary and hence no friction.
这个过程被称作反向挤压就是因为金属的流动方向与推杆的移动方向相反。
It is termed backward because of the opposite direction of the flow of the metal to that of ram movement. Thus, the billet in the container remains stationary and hence no friction.
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