density of ionization

例句：

1. 1.The density of the gas is critical for its behavior in the environment.
   气体的密度对其在环境中的行为至关重要。
2. 2. The density of the ocean is a key factor in determining its ability to absorb carbon dioxide.
   海洋的密度是决定其吸收二氧化碳能力的关键因素。
3. 3.The density of the material can be adjusted by adding or removing specific components.
   通过添加或去除特定成分，可以调整材料的密度。