短語(yǔ)詞組短語(yǔ)slides self abrasion ratio 滑板自磨耗比Abrasion Degree Growth Ratio 增磨率volume abrasion ratio 體積磨耗比initial abrasion ratio 初始磨損率butt contact line abrasion ratio 對(duì)接觸線磨耗比 返回 abrasion ratio