It is same with human lives , they usually change , so-called " fugacity " .

人的一生也如此，它经常在变化，这就是无常。

Review of mixture thermodynamics ; fugacity ; fugacity coefficient ; activity ; activity coefficient ; standard states and constitutive models for capturing non-ideal effects .

混合物热力学回顾；逸度；逸度系数；活性；活性系数；标准状态与非理想效应之结构模型的处理。