[填空题]
What is the approximate pressurdk60 a-c(yg+df2duhw 5mq q 4revs46uzhw v 97b inside a pressure cooker if the water is boiling u 4b9zw vsv76hat a temperature of 120 $^{\circ} $ C? Assume no air escaped during the heating process, which started at 20 $^{\circ} $ C. atm