This surface has extreme hardness (60 RC. ), excellent wear and corrosion resistance, and low coefficient of friction.
这表面有极高的硬度（60局。），耐磨性和耐腐蚀性，低摩擦系数。
The tube surface has extreme hardness (60 RC.), excellent wear and corrosion resistance, and low coefficient of friction.
管表面有极大的硬度(60钢筋混凝土。)，良好的耐磨性和耐腐蚀性，低摩擦系数。
Wear failure refers to the relative sliding friction between the surfaces causes the surface of the metal continue to wear their work arising from the failure.
磨损失效系指表面之间的相对滑动摩擦导致其工作表面金属不断磨损而产生的失效。
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