orbit motion

• n. 轨道运动

例句

用作名词 (n.)

1. This motion of an object in an orbit about a center is called revolution.
   像这种一个物体环绕某个中心所作的轨道运动叫做公转。
2. The magnetic fields produced by the orbital motions of the electrons in filled shells also cancel in pairs.
   满壳层中电子的轨道运动所产生的磁场也被成对地抵消了。