其主要功能是减少轴瓦与曲轴间的滑动摩擦磨损，提高发动机曲轴及连杆的使用寿命。
Its primary functions are to reduce wear and tear between bearing and shaft, and raise longevity of shaft and connection rod.
低摩擦系数—切屑与刀具间的摩擦系数应当较低。这会使磨损率较小及切屑流动更好。
Low friction-the coefficient of friction between the chip and tool should be low. This would allow for lower wear rates and better chip flow.
研究了铝合金及不同成分复合材料在不同温度及载荷下的摩擦系数和磨损率；
The friction coefficients and wear rates of the aluminum alloy and composites reinforced with ceramics of different volume fractions were measured at various temperatures and loads.
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