常見例句Ropivacaine and Fentanyl Concentrations in Patient-Controlled Epidural Analgesia During Labor: A Volume-Range Study Jean-Marc Bernard, Daniel Le Roux, and Jacques Frouin 分娩時病人自控硬膜外鎮(zhèn)痛中的羅哌卡因和芬太尼濃度:容量范圍研究 返回 Frouin