Membranous portion of urethra

• 尿道膜部

Membranous portion of urethra的用法和样例：

例句

1. The external sphincter, at the leel of the membranous urethra, is often depicted as a "sandwich" of muscles in the horizontal plane.
   外括约肌，位于尿道膜部水平，常被描述为水平平面上的三明治样肌肉。