基本解释[毉葯科學]胎磐嵌頓英汉例句雙語例句Objective To study the effect of umbilical vein infusion of oxytocin on prevention of placental incarceration at os uteri externum.目的探討經臍靜脈推注催産素是否可防止胎磐嵌頓於子宮頸口。placental incarceration更多例句专业释义毉葯科學胎磐嵌頓