Abrasion and mechanical properties test of concrete have shown that the degree of abrasion dependent on initial abrasion ratio, flexural strength and limit strain.
3
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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