结论严格控制适应症，掌握手术时机，食管下端环切术治疗门脉高压并发食管曲张静脉破裂出血止血效果确切，效果较满意。
Conclusions Hemostasis effect was satisfactory using loop cut of lower esophagus for treating esophagus vein bleeding caused by high pressure of portal vein when the chance was suitable.
若将水泥浆先注入井中，再将下端封闭的套管下入井内，把水泥浆挤入环形空间，就能保证环空有饱满的水泥浆。
The slurries are injected into well before running in casings with closed bottom end and then running casing make the slurry be squeezed into annulus to improve cementing bonding in small annulus.
鼻翼软骨纤维环和鼻翼软骨肌肉环是维持外鼻下端形态和鼻孔对称的重要解剖结构。
Alar cartilaginous fibrous ring and alar cartilaginous muscular ring are very important anatomic structures to maintain the shape of the lower part of the nose.
胰头癌常使胰十二指肠动脉环向右移位，而十二指肠壶腹部肿瘤及胆总管下端肿瘤可将胰十二指肠动脉环向左推移。
Tumors of the pancreatic head pushed the pancreasduodenal arterial circle to the right, that of the duodenal ampullary and of common bile duct pushed the arterial circle to the right.
在所述的弹性球囊内腔的内管上，在弹性球囊的上端和下端各固定套有一个金属标记环。
Metal mark rings are respectively sheathed on the inner tube in the inner cavity of the elastic saccule and the upper and the lower ends of the elastic saccule.
在所述的弹性球囊内腔的内管上，在弹性球囊的上端和下端各固定套有一个金属标记环。
Metal mark rings are respectively sheathed on the inner tube in the inner cavity of the elastic saccule and the upper and the lower ends of the elastic saccule.
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