vacant energy level造句
- The electron ( green 1 . ) can tunnel onto the island ( 2 . ), occupying a previously vacant energy level.
- After the electron has been ejected, the atom is left with a vacant energy level, also known as a L shell to the K shell, the X-ray emitted is called a K-alpha X-ray.
- It's difficult to find vacant energy level in a sentence. 用vacant energy level造句挺难的