irreversible isothermal expansion

例句：

1. 1.The material's behavior at high temperatures is irreversible isothermal expansion.
   这种材料在高温下的行为是不可逆的等温膨胀。
2. 2. During the experiment, the sample was subjected to an irreversible isothermal expansion.
   实验中，样品经历了不可逆的等温膨胀。
3. 3.The researcher found that the material's behavior during the process was due to an irreversible isothermal expansion.
   研究者发现，该材料在过程中的行为是由于不可逆的等温膨胀导致的。