water film coefficient

例句：

1. 1.The water film coefficient is a critical parameter in the design of hydrodynamic devices.
   水膜系数是设计水动力设备时的关键参数。
2. 2.In order to improve the efficiency of the cooling system, it is necessary to understand the relationship between the water film coefficient and the flow rate.
   为了提高冷却系统的效率，有必要了解水膜系数与流速之间的关系。
3. 3. The water film coefficient can be used to predict the performance of aerosols invarious environments.
   水膜系数可以用来预测气溶胶在不同环境中的性能。