拆解报废的发动机就会发现推杆无一例外地存在严重的麻坑及从凸轮轴凸轮脱落的金属磨屑。
On stripping down a damaged motor, the tappets are invariably found to be heavily pitted and bits of metal broken off the camshaft lobes.
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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