And, we're going to look at what happens as the chloride ion moves from infinity in towards the positive ion.

然后我们要看一下,当氯离子从无限远处逐渐靠近,这个正离子会发生什么。

麻省理工公开课 - 固态化学导论课程节选

When a particle moves in a circle, it has an acceleration towards the center of this size, v^2 over R.

当一个质点在圆周上运动时,它有一个指向圆心的加速度,v^2 / R

耶鲁公开课 - 基础物理课程节选

It tells you when a particle moves in a circle, it has an acceleration in a negative R direction, namely directed towards the center.

它告诉你当一个物体在圆周上运动时,它有一个在 -R 方向的加速度,也就是说是直接指向圆心的

耶鲁公开课 - 基础物理课程节选