电、磁场中热力学关系式的修正

Revision of thermodynamic relations in external electric and magnetic field

对电、磁场中的一些热力学关系式进行了研究，结果表明，为保持传统的化学势形式和力平衡形式不变，内能和压力必须加以修正 .用最小二乘法对乙醇－水和丙醇－水体系在电、磁场中的活度系数进行了回归，所得的计算值与实验值的比较，其平均相对误差小于 1.0％ .

Some of thermodynamic relations in external electric and magnetic field were studied in this paper. The results show that the internal energy and pressure need to be revised in order to keep form of traditional chemical potential and pressure at phase equilibrium unchanged. The activity coefficient of ethanol－ water and 1－ propanol－ water system in external applied electric field and magnetic field was regressed by using the least square method. The average relative error of calculated value comparing with experimantal value is less than 1.0 percent.