coefficient of non-uniformity of motion
不等速运动系数 coefficient of non-uniformity of motion 不等速动系数 coefficient of non-uniformity of motion 齿廓移位系数 coefficient of profile shifting ..
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动摩擦系数 coefficient of kinetic friction 不等速运动系数 coefficient of non-uniformity of motion 不等速动系数 coefficient of non-uniformity of motion ..
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