阐述磨损极限的重要性，介绍零件磨损的规律及确定磨损极限的几种方法。

The importance of attrition limitation was described. The law of attrition of parts and several methods of determining the attrition limitation were introduced .

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电机上下导轴承磨损极限，要更换轴承； 转子上下轴套偏磨极限，要更换轴套；

Motor upper and lower guide bearing wear limit, to replace the bearings, rotor shaft eccentric wear limit, to replace bushings;

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从混凝土磨蚀和力学性能试验得知，水工混凝土的磨蚀程度依赖于混凝土的初始磨损率，抗拉强度和极限拉伸变形值。

Abrasion and mechanical properties test of concrete have shown that the degree of abrasion dependent on initial abrasion ratio, flexural strength and limit strain.

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