acyclic potential motion

例句：

1. 1. The molecule's structureis a cyclic potential motion.
   该分子的结构是一个循环势能运动。
2. 2. Themolecule's structure is an asymmetrical potential motion.
   该分子的结构是对称的势能运动。
3. 3. The molecule's structure is a non-cyclic potential motion.
   该分子的结构是非循环的势能运动。