planetary motion

• 行星运动

planetary motion的用法和样例：

例句

1. He formulated the theory of planetary movement.
   他系统阐述了行星运动理论。
2. He most certainly deserves credit as a pioneer, with Le Verrier, of applying perturbation theory to planetary motion.
   他与勒威耶都是应用微扰理论解决行星运动问题的开拓者，毫无疑问。