The boundarylayer is characterized by a concentration gradient of the oxidized ion. Diffusion of the reducing agent ion through the boundarylayer controls the REDOX reaction.
边界层的特征在于被氧化离子的浓度梯度，还原剂离子的扩散通过边界层控制了氧化还原反应。
2
It is found that significant radial variations of cracking temperature and cracking reaction rate exist due to boundarylayer near the inner wall.
It was also found that the photochemistry reaction was an important source in boundarylayer in daytime and precipitation process could arouse marked change of O3 concentration.