And if you're below this temperature here, this quantity, p times v it would be negative.

压强与体积的乘积将变成负数，这可能吗？

麻省理工公开课 - 热力学与动力学课程节选

A It tells me that the partial of A with respect to T at constant V is minus S. Right?

他告诉我们,在恒定体积下对温度的微分等于负S，对吗？

麻省理工公开课 - 热力学与动力学课程节选