spiral septum

• 螺旋形隔板

spiral septum的用法和样例：

例句

1. When the spiral septum fails to completely descend, the aortic and pulmonic trunks are left undivided at their outflow.
   一旦螺旋形隔板下降不全，主动脉和肺动脉干的血流将不能分开。