松孔镀铬层应用于受重压的滑动摩擦件及耐热、抗蚀、耐磨零件，如内燃机汽缸内腔、活塞环等。
Loose hole plating chromic layer by weight used in the sliding friction parts and heat resistance, corrosion, wear parts, such as internal combustion engine cylinder lumen, piston rings.
同时，也会造成内燃机过热、活塞(环)卡缸、熔着磨损以及活塞环断裂等事故。
Meanwhile, it causes engine overheat, blockage piston (ring) in the cylinder, melting to wear and damage piston ring.
分析了内燃机中关键零件活塞环的重要参数径向压力分布的几种测量方法。
Several methods for radial pressure distribution measurement on a piston ring which is one of key parts of an inter combustion engine are analyzed in the article.
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