Primary waves were recorded at a mean propagation speed of 55.58 mm/s from UES to upper segment of esophagus ,22.15 mm/s from upper to middle segment,41.12 mm/s from middle to lower segment,and 14.09 mm/s from lower segment to LES.是什么意思_Primary waves were recorded at a mean propagation speed of 55.58 mm/s from UES to upper segment of esophagus ,22.15 mm/s from upper to middle segment,41.12 mm/s from middle to lower segment,and 14.09 mm/s from lower segment to LES.在线翻译_英语_读音_用法_例句