isentropic chart

例句：

1. 1. The engineer drew an isentropic chart to show the pressure distribution in the tunnel.
   工程师绘制了一个等熵图来展示隧道中的压力分布。
2. 2.The scientists used the isentropic chart to calculate the efficiency of the engine.
   科学家们使用等熵图来计算发动机的效率。
3. 3.The isentropic chart helped us understand the relationship between temperature and pressure in the gas.
   等熵图帮助我们理解气体温度和压力之间的关系。