adiabatic invariant

例句：

1. 1. The adiabatic flame temperature is the temperature at which the heat flux through the wall of a reactor is zero.
   绝热火焰温度是反应器壁面热流为零时的温度。
2. 2. The adiabatic expansion of an ideal gas is the change in volume that occurs when the pressure is constantand the temperature is changing.
   理想气体的绝热膨胀是在压力恒定且温度变化时体积的变化。
3. 3. In adiabatic flow, the fluid does not exchange energy with its surroundings.
   绝热流动中，流体不与其周围环境交换能量。