If you cannot access our Web site, send the information to VOA Special English two-zero-two-three-seven USA.

VOA: special.2009.10.16

Going from two to three, that's an adiabatic expansion, so q is equal to zero in that step.

从第二点到第三点，是绝热膨胀，因此q等于零。

麻省理工公开课 - 热力学与动力学课程节选

Going from two to three, that's an adiabatic expansion, so q is equal to zero in that step.

从第二点到第三点，是绝热膨胀，因此q等于零。

麻省理工公开课 - 热力学与动力学课程节选