boundary layer heat transfer

例句：

1. 1. The boundarylayer is a critical region where heat transferoccurs.
   边界层是热量传递发生的关键区域。
2. 2. Heat transfer in the boundary layer isinfluenced by many factors.
   边界层的热传递受到许多因素的影响。
3. 3. The study of boundary layerheat transfer is essential for understanding fluid dynamics.
   研究边界层传热对于理解流体动力学至关重要。