其中，当所述钻头被锁定到所述可调深度限位件上时，所述外壳近端处于距所述可调深度限位件远端的第一轴向距离的位置，所述第一轴向距离与进入所述骨头部分的最大钻孔深度成正比。
The adjustable stop has a drill bit engaging mechanism to selectively lock the adjustable stop the drill bit at a desired location to limit the dept that the drill may penetrate into the bone.
最后，按摩轮支架（1）装配有用于限制颈臂（7）的运动的限位止动件（12）。
Finally, the wheel support (1) is fitted with a limit stop (12) that restricts the movement of the cervical arm (7).
利用限位装置成功解决反拉深起皱问题，保证了零件质量。
Position limit device is employed to solve the problem of corrugation by reverse-drawing so that quality of the part can be ensured.
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