[填空题]
What is the approximate prmdd*:(qej k uwwe9l53tby ) y, ;cx. tfci*fkd 27(ib77zqwe kessure inside a pressure cooker if the water is boiling at a i(ifc;e7dwx*kc t b7k.fzq 72temperature of 120 $^{\circ} $ C? Assume no air escaped during the heating process, which started at 20 $^{\circ} $ C. atm