pendulum motion of electrons

• 电子摆动

pendulum motion of electrons的用法和样例：

例句

1. So it is with the theory of the pendulum.
   政局摆动理论也是如此。
2. Rook pulled at the reins and set off of himself.
   前列中的一匹匹马的臀部微微摆动起来了。