isentropic flow

例句：

1. 1. Thefluid flowed through the pipe at aconstant speed without any friction.
   流体以恒定速度流过管道，没有摩擦。
2. 2. Theengineer calculated the isentropic flowrate of the gas in the pipeline.
   工程师计算了气体在管道中的等熵流动速率。
3. 3. The isentropic flowchart shows the relationship between temperature and pressurein the system.
   等熵流动图显示了系统中温度和压力之间的关系。