有冲刷磨损和撞击磨损两种基本类型。
There are scouring abrasion and impact wear two basic types.
这些材料虽能抗磨损，但却不能承受强力撞击。
Although these materials resistant to wear and tear, but unable to bear strong impact.
这可能是由于洞穴，速度撞击，甚至一般的磨损。
This can be caused by potholes, speed bumps, and even general wear and tear.
这可能是由于洞穴，速度撞击，甚至一般的磨损。
This can be caused by potholes, speed bumps, and even general wear and tear.
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