physical adsorption

例句：

1. 1. The process of physical adsorption is crucial in the removal of pollutants from water.
   物理吸附过程在从水中去除污染物中至关重要。
2. 2.The researchers found that the physical adsorption capacity of activated carbon was significantly affected by the pH value.
   研究人员发现，活性炭的物理吸附容量受pH值显著影响。
3. 3. The adsorption behavior of a certain adsorbent material on a specific substrate has been studied extensively in recent years.
   近年来，对某种吸附剂材料对特定基底的吸附行为进行了广泛研究。