The mean portal pressure before shunt was 34.6 cmH_2O,and the average postshunt decrement was 6.7cmH_2O.是什么意思_The mean portal pressure before shunt was 34.6 cmH_2O,and the average postshunt decrement was 6.7cmH_2O.在线翻译_英语_读音_用法_例句