Furthermore, telescopic crowns transfer occlusal forces along the long axis of the abutment teeth and provide guidance, support, and protection from movements that might dislodge the denture.

此外，套筒冠义齿可沿着基牙长轴传递合力，可以提供引导，支持作用，并能防止可能导致义齿脱位的各种运动。

youdao

The forces acting on the departing bubble are also analysed. and the formulas for calculating the relative velocity and the velocity with which the bubble moves to the tube axis are obtained.

继而分析了在边界层中脱离壁面的汽泡上的作用力，导出了汽泡运动相对速度的计算公式及汽泡走向管子轴心的速度的计算公式。

youdao

We can let the X-axis coincide with one of the forces, which will simplify the problem.

我们可以让x轴与其中的一个力相重合，这就简化了问题。

youdao

But once in awhile, one of these plus twos comes in almost on axis, and it gets whipped around by the Coulombic repulsive forces.

但是偶尔一个带两个正电荷的粒子,以接近于轴的位置进入，会快速的移动到周围,由于库仑斥力的作用。

麻省理工公开课 - 固态化学导论课程节选