§22麦氏关系及应用 1.麦克斯韦关系 aT ap S U (-)S aT aS H aS F\oV丿 aT (-)pT aS P OT§2.2 麦氏关系及应用 S S V p V T          = −        S S p V p T         =           T T V p V S          =        T T p V p S         = −           U H F G (−)S (−) p V T 1. 麦克斯韦关系