用 7种有代表性物质在广阔温度和压力范围内的液体物性实验值 ,对两个不同程度上修正的vanderWaals模型进行比较和评价。结果表明 ,从统计力学出发 ,进一步引入Lennard Jones位能函数对内压项进行修正的vanderWaals模型 ,较仅对已占体积项进行修正的vanderWaals模型明显更优 Two different modified van der Waals models were compared and evaluated by using liquid physical properties of seven representative materials over a wide range of temperature and pressure. The results show that the VanderWaals model with the Lennard Jones bit energy function is further introduced to correct the internal pressure terms from the statistical mechanics, which is significantly better than the vanderWaals model which only modifies the occupied volume terms