However, the diameter of the filling groove (34) is smaller than the diameter (d) of the ball, thereby the ball (25) does not fall off.
然而，填充槽(34)比滚珠直径(D)略小，使得滚珠(25)不会脱落。
However, the diameter of the filling groove (34) is smaller than the diameter (d) of the ball, thereby the ball (25) does not fall off.
然而，填充槽(34)比滚珠直径(D)略小，使得滚珠(25)不会脱落。
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