Ball bearing raceway groove-shaped, usually an arc-shaped cross section, the radius slightly larger than the ball radius.
球轴承的滚道呈沟形，通常为一个圆弧形的横截面，其半径略大于球半径。
Ball bearing raceway groove-shaped, usually an arc-shaped cross section, the radius slightly larger than the ball radius.
球轴承的滚道呈沟形，通常为一个圆弧形的横截面，其半径略大于球半径。
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