Dilation of bladder neck

• 膀胱颈扩张术

Dilation of bladder neck的用法和样例：

例句

1. Cervix dilation and descending of fetal head are the most important parameters to evaluate birth process in clinical obstetrics.
   宫颈扩张和胎头下降是两个标志产程进展的最重要的指标。