安徽快三走势图乐乐彩:Auto parts and accessories, Car and Truck parts trade platform

Engine bearings both reduce friction between the rotating part of the engine and the stationary part and support the crank. The bearing material must be extremely strong because of the stresses caused by the explosions inside the internal combustion engine. Reducing friction is accomplished in part by the fact that dissimilar metals slide against each other with less friction and wear than similar materials will.
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