phase volume ratio

例句：

1. 1.The phase volume ratio of the system is critical to its stability.
   系统相位体积比对稳定性至关重要。
2. 2. In this experiment, we measured the phase volume ratio of the liquid.
   在这个实验中，我们测量了液体的相位体积比。
3. 3. The phase volume ratio can be used to determine the density of the material.
   相位体积比可以用来确定材料的密度。