An isentropic expansion occurs without any heat transfer.

等熵的膨胀在没有任何热传递的情况下发生。

The process in the engine is isentropic to maximize efficiency.

发动机中的过程是等熵的，以最大化效率。

The isentropic efficiency of the turbine is crucial for performance.

涡轮的等熵的效率对性能至关重要。

Engineers often assume an isentropic process to simplify calculations.

工程师们经常假设一个等熵的过程来简化计算。

In thermodynamics, an isentropic process is both adiabatic and reversible.

在热力学中，等熵的过程既是绝热的又是可逆的。

In the calculation of shock temperature by using isentropic curve, an isentropic equation which is consistent with the Hugoniot curve is developed.

在利用等熵线计算冲击温度时，从冲击绝热线出发推导了一个半解析的等熵方程。

Helicity denotes the conjunct intensity of rotation and the movement along the rotation, and it is conservative in isentropic fluid.

螺旋度表征流体旋转与沿旋转方向运动的强度，在等熵流体中具有守恒性。