与套圈基准端面或垫圈背面的切面垂直的方向，可以认为是轴向。
With the ring or washer on the back of the base face the direction of the vertical section can be considered...
与套圈基准端面或垫圈背面的切面垂直的方向，可以认为是轴向。
With the ring or washer on the back of the base face the direction of the vertical section can be considered to...
垂直于轴心线的平面，与套圈基准端面或垫圈背面的切面平行的平面，可以认为是径向平面。
The plane perpendicular to the axis line, and the ring reference face or back of the section parallel to the ring plane, can be considered a radial plane.
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