Abdominal sonography demonstrated a long segment intussusception associated with a low echo genic mass 腹部超音波检查展示一长段肠套叠，并合并有一低回音性肿瘤。
2.
It can also lower echo . 9 . particular noise detect to avoid interference from outside 10 . choose excellent chipset and high quality component 12 .一拖二，带两支领夹麦克风或带一领夹一持麦克风
