【摘要】 从微扰理论出发，利用作者提出的分子势能模型──分子的多价势能模型，并考虑高阶微扰项和硬球参考流体状态方程的多级展开，从理论上导出了作者在过去曾提出的状态方程，从而解释了该方程存在的合理性．更多还原

【Abstract】 Considering the highed-order perturbation terms and the higher-power terms in the referential fluid expression of haed-sphere model, the equation of state proposed by the authors is derived on the basis of simplified’ molecular potential function-MutiSquare-Well (MSW) model in this paper. Thus, the reasonableness of this equation of state is explained from perturbation theory.更多还原