However the feasibility of liver transplantation is limited by its high cost a shortage of donor organs the demand of high surgical technic and the need for immunosuppression .

然而，肝移植的可行性受到成本高、供体器官短缺、 手术 技术要求高、需要服用免疫抑制剂等因素的限制。

Along with the development of surgical technic on vitreous and retina silicone oil as a vitreous gapfiller is used for complexity vitreoretinopathy and gains satisfactory effects .

随着玻璃体视网膜 手术 技术的发展，硅油作为一种玻璃体填充物，已用于复杂性玻璃体视网膜病变并取得了令人满意的效果。

The operative method the improvement of surgical technic early urination and postoperative care were important to prevent fistula formation .

作者认为：手术方式、 操作 方法的改进，早期拔导尿管自行排尿和术后处理是防止尿瘘的重要环节。

The detection of HPV DNA was done on surgical specimens of 20 patients with colon carcinoma with polymerase chain reaction ( PCR ) technic .

本文采用聚合酶链式反应（PCR）的 方法，对20例大肠癌患者的 手术 切除标本进行了人体乳头瘤病毒（HPV）DNA的检测。