目的：研究无痛分娩法用于分娩镇痛的疗效和对母婴的影响。

Objective: To study the effect of analgesia for painless labor and its influence on mother and fetus.

youdao

目的：研究无痛分娩法用于分娩镇痛的疗效和对母婴的影响。

Objective: To study the effect of analgesia for painless labor and its influence on mother and fetus.

youdao