pressure-volume relation

例句：

1. 1. The relationship between pressure andvolume is crucial for understanding the behavior offluids.
   压力和体积之间的关系对于理解流体的行为至关重要。
2. 2. In this experiment, we foundthat the pressure-volume relation deviates from the ideal gas law.
   在这个实验中，我们发现压力-体积关系与理想气体定律不符。
3. 3. The pressure-volume relationcan be used to predict the behavior ofmaterials under different conditions.
   压力-体积关系可以用来预测材料在不同条件下的行为。