venturi mouthpiece

例句：

1. 1.The venturi tube is used to control the flow of gases through a pipe.
   文丘里管用于控制气体通过管道的流动。
2. 2. The venturi tube is designed to increase the pressure difference between two fluids.
   文丘里管设计用来增加两种流体之间的压力差。
3. 3. The venturi tube is commonly used in water treatment plants to improve the efficiency of filtration processes.
   文丘里管在水处理厂中常用来提高过滤过程的效率。