phase instability meaning in Chinese

相不稳定性
相位不稳定度

We discuss the phase instability of the system with the grand potential functional and find only gas - liquid phase transition happens and the demixing phase transition does not happen . after numerical calculation we want to draw the phase transition line , but failed in low density because of the divergence in calculation
利用用巨势泛函展开的方法我们对系统进行了相不稳定分析，发现在我们所讨论的离子液体系统中只会有气?液凝结相变发生，而不会有分层相f硕士学住论文物malaster ’ stm “变发生。