ionic charge

例句：

1. 1.The ionization process is crucial 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. Ionization can occur naturally when a gas is exposed to an electric field.
   当气体暴露在电场中时，会发生自然离子化。
3. 3.In electrochemistry, ionization refers to the process by which atoms lose or gain electrons.
   在电化学中，离子化是指原子失去或获得电子的过程。