P20?10?32?1?ln?B11?y2?12?(?33?0.52?1103)?1.81?10?3
RT8.314?323.15??P20?10?32?2?ln?B22?y1?12?(?1538?0.52?1103)??9.4?10?3
RT8.314?323.15??ln??y1ln?1?y2ln?2?0.5?1.81?10?3?0.5?(?9.4?10?3)??3.795?10?3??0.9962f??p?19.92kPa
另法B?y1B11?y2B22?y1y2?12??0.5?33?0.5?1538?0.5?0.5?1103??509.75
BP?509.75?20?10?3ln?????3.79?10?3
RT8.314?323.15 33