low-velocity layer

例句：

1. 1. The aircraft's engine produces a low-velocity layer of air that helps it stayaloft.
   飞机的发动机产生一种低速层的空气，帮助它保持在空中。
2. 2. Thescientist found that the low-velocity layer was responsible for the unusual behaviorof the material.
   科学家发现低速层是这种材料异常行为的原因。
3. 3. Theresearcher proposed that thelow-velocity layercould be used to improve the efficiencyof solar panels.
   研究人员提议可以利用低速层来提高太阳能板的效率。