abrasions擦除； 擦破； 磨损； 磨耗abrasionn.擦伤；磨损；磨损处abrasion resistant alloy耐磨合金abrasion resistant steel耐磨钢abrasion of contact wire接触线磨损abrasion and refreshment脱落更新abrasion resistant finish耐磨整理abrasion resistance alloy[机] 耐磨合金abrasion conversion table磨耗换算表abrasion resistance index磨耗指数abrasion resistance tester耐磨试验机abrasion-proof waveguide耐磨波导