viscous sublayer

例句：

1. 1.The oily film on the surface of the water is a viscous sublayer that prevents the water from mixing with the air.
   水面表面的油膜是一层黏稠的下层，阻止了水与空气的混合。
2. 2. In the study of fluid dynamics, the viscous sublayer is an important concept to understand how materials behave under shear stress.
   在流体动力学研究中，黏稠下层是一个重要概念，用于理解材料在剪切应力下的行为。
3. 3. The viscous sublayer is responsible for reducing friction and preventing wear between moving parts.
   黏稠下层负责减少摩擦并防止移动部件之间的磨损。