结果钛环钉组血管损伤反应轻，吻合口有完整内膜覆盖；
Results Complete intima coverage was also found in titanium stapler group;
目的探讨应用钛环钉行人工血管旁路术后人工血管及髂动脉腔表面内皮细胞形态学变化。
Objective To investigate the morphologic change of the endothelial cells in the surface of the grafts and the iliac artery after artificial blood vessel bypass.
攀爬之前要观察并判断所有已经固定在路线上面的装备是否状态良好，包括膨胀钉和挂片，尤其是保护站和难点上，这些地方上的钩环使用频率最高，磨损也最为严重。
Visually and manually inspect all fixed gear before using it, including bolts and anchors, and especially those at stations and cruxes where the carabiners see maximum wear.
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