Some differences between the rolls of high-speed steel and high-chrome iron in hot crown, friction coellieient, characteristics of oxidative film and anti-accident and so on are analyzed.
对比分析了高速钢与高铬铁轧辊在热凸度、摩擦系数、氧化膜特征、抗事故性等方面的区别；
Invalidation of automotive friction lining will lower braking effect, even lead to accident.
汽车制动器摩擦片失效，会降低制动效果，甚至造成安全事故。
Invalidation of automotive friction lining will lower braking effect, even lead to accident.
汽车制动器摩擦片失效，会降低制动效果，甚至造成安全事故。
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