orbital motion

基本解释

The major semiaxis a and p of the relative orbital motion are known.
我们知道其相对轨道运动的主要半长轴a和周期p。
Spin-orbit coupling is the interaction between the spin magnetic moment of an electron and magnetic field generated by its orbital motion.
自旋-轨道耦合是电子的自旋磁矩和由轨道运动产生的磁场之间的相互作用。
The orbital motion of close binary pulsar can be used for generation of an astronomical ephemeris time scale BPT.
介绍了该领域研究的基本状况，重点对毫秒脉冲星守时的理论方法，综合脉冲星时间及与原子时的关系等进行了讨论和评述。
But Newton for years had been curious about the cause of the orbital motion of the moon and planets.
但多年来牛顿一直对月球和行星绕轨道运行的起因好奇不已。
You can observe the moon's orbital motion from one night to the next by watching the moon's location with respect to background stars.
通过观察对比月亮在某一个晚上和在第二个晚上与参照星座的相对位置，你能看到月亮的轨道运动。