当时马车的铁轮不断地将那些碎石碾得越来越平整、防水性越好的磨损面。
The iron wheels of carriages ground the stones of the top level into a continually smoother and more watertight surface.
使用SEM电镜，对两种材质的衬板及一种材质的叶浆头的磨损面进行了观察分析。
Using SEM, the abraded surface of two kinds of liner plates and one paddle have been investigated.
本文还提出了由碳化物数量、分布、磨损面硬度等因素构成的抗磨参数与相对耐磨性的线性关系。
Authors suggest the linear relationship between the anti-abrasion parameters consisting of the amount and distribution of carbides, abrasive surface hardness and the abrasion resistance in this paper.
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