We observed and measured the internal diameter of the bloodvessel,echo sign of the internal wall,stenosis extent,the nature of blood flow,the velocity of blod flow and resistant index (RI).是什么意思_We observed and measured the internal diameter of the bloodvessel,echo sign of the internal wall,stenosis extent,the nature of blood flow,the velocity of blod flow and resistant index (RI).在线翻译_英语_读音_用法_例句