圆度公差等于三等分或多等分测量所取得的最大或最小外径之差。
The roundness tolerance equals to the difference between max. and min. outer diam. obtained by measuring at 3 or more equable parts.
圆度是花键与真圆的圆廓之间的公差。
Out of Roundness is the variation of the spline from a true circular configuration.
同轴度公差评估的是轴线相对于基准轴线的偏差，而径向跳动公差则评估的是圆周线相对于同轴圆的偏差。
The coaxiality tolerance assesses the deviation of the axis from the datum axis, while the radial run-out tolerance assesses the deviation of the circumference line from a coaxial circle.
同轴度公差评估的是轴线相对于基准轴线的偏差，而径向跳动公差则评估的是圆周线相对于同轴圆的偏差。
The coaxiality tolerance assesses the deviation of the axis from the datum axis, while the radial run-out tolerance assesses the deviation of the circumference line from a coaxial circle.
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