metastable state

例句：

1. 1. The material is in a metastable state, which means it's not stable but will eventually reach equilibrium.
   该材料处于亚稳态，意味着它不稳定但最终会达到平衡。
2. 2. Metastable states are important for understanding the behavior of materials under extreme conditions.
   亚稳态对于理解材料在极端条件下的行为至关重要。
3. 3. In this experiment, we observed the metastable state of the gas as it transitioned from one phase to another.
   在这个实验中，我们观察到了气体从一种相过渡到另一种相时的亚稳态。