版权所有：华东理工大学物理化学教研室 12 8.1 Definitions 3). Degrees of freedom, F Degrees of freedom ,or the variance of a system, F, is the number of intensive variables that can be changed independently without disturbing the number of phases in equilibrium. In a single-component, single-phase system (C = 1, P = 1), p and T may be changed independently without changing the number of phases, so F = 2. We say that such a system is bivariant, or that it has two degrees of freedom.版权所有：华东理工大学物理化学教研室 12 8.1 Definitions 3). Degrees of freedom, F Degrees of freedom ,or the variance of a system, F, is the number of intensive variables that can be changed independently without disturbing the number of phases in equilibrium. In a single-component, single-phase system (C = 1, P = 1), p and T may be changed independently without changing the number of phases, so F = 2. We say that such a system is bivariant, or that it has two degrees of freedom