isothermal hardening

例句：

1. 1.The process was carried out at a constant temperature, ensuring the accuracy of the results.
   该过程在恒定温度下进行，确保了结果的准确性。
2. 2. The experiment was conducted under isothermal conditions to eliminate any errors due to temperature fluctuations.
   实验在等温条件下进行，以消除由于温度波动引起的任何误差。
3. 3. In order to study the reaction rate, the reactants were kept at isothermal conditions for a specifictime.
   为了研究反应速率，将反应物保持在等温条件下一定时间。