umbilical notch

• [医] 脐[静脉]切迹

umbilical notch的用法和样例：

例句

1. The normal epicenter values indicated that the center of rotation of the distal radioulnar joint fell in the middle half of the sigmoid notch in all positions.
   正常中心值显示远端桡尺关节旋转中心从各个方向看均在桡切迹的中半位。