pressure and velocity stages

例句：

1. 1. The study of pressure and velocity stages is crucial for understanding the behavior of fluids.
   研究压力和速度阶段对于理解流体的行为至关重要。
2. 2.The engineers used a new technique to measure the pressure and velocity stages in the pipeline.
   工程师们使用了一种新技术来测量管道中的压力和速度阶段。
3. 3. The research on pressure and velocity stages has led to significant advancements in the field of fluid dynamics.
   关于压力和速度阶段的研究的进展在流体动力学领域取得了显著的进步。