gram ion

例句：

1. 1. The ionization process is essential for the formation of new compounds.
   离子化过程对于形成新化合物至关重要。
2. 2.In physics, an ionization energy is the amount of energy required to remove an electron from an atom or molecule.
   在物理学中，电离能是指移除一个电子所需的能量量。
3. 3. The ionization potential of a gas is the minimum energy required to remove an electron from its groundstate.
   气体的电离势是指移除其基态电子所需的最小能量。