adiabatic index

例句：

1. 1.The adiabatic index is used to measure the efficiency of heat transfer in a closed system.
   绝热指数用于测量封闭系统中热量传递的效率。
2. 2. In thermodynamics, the adiabatic index represents the ratio of the internal energy to the entropy of a system at constant temperature and pressure.
   在热力学中，绝热指数表示系统在恒定温度和压力下内能与熵的比率。
3. 3. The adiabatic index can be used to predict the performance of materials under extreme conditions.
   绝热指数可以用来预测材料在极端条件下的性能。