中文摘要：

研究表明Redlich—Kwong类物态方程可以很好的定量描述氩流体的第二维里系数[Ind．Eng．Chem．Res．，2003，42，7037]．研究了Redlich-Kwong类物态方程对流体的第三维里系数的描述状况，指出，Redlich-Kwong类物态方程可以定性描述高温区氩流体的第三维里系数，但不能给出定量描述．

英文摘要：

It is found that the Redlich-Kwong-family equations of state quantitatively can describe the second virial coefficients of argon-like fluids well[ Ind. Eng. Chem. Res. , 2003, 42, 7037 ]. In this paper, the Redlich- Kwong-family equations of state are used to describe the third virial coefficients of real fluids. Results show that these equations can qualitatively describe the third virial coefficients in the high temperature region, but they cannot quantitatively describe the third virial coefficients as well as the second virial coefficients.