boundary-layer flow

例句：

1. 1.The boundary layer flow is responsible for theheat transfer between the air and the ground.
   边界层流动负责空气和地面之间的热量传递。
2. 2. The boundary layer flow can affect theoverall performance of a vehicle.
   边界层流动可以影响车辆的整体性能。
3. 3. In orderto improve the efficiency ofthe boundary layer flow, researchersare exploring new technologies.
   为了提高边界层流动的效率，研究人员正在探索新的技术。