Conclusions: the treatment of achalasia of the cardia by means of double balloon dilation is a advantage approach simple to operate with the advantage of a low rate of complication and non-operation.
结论：用双球囊扩张的方法治疗贲门失弛缓症具有操作简便并发症少，不用手术的优点，是一种疗效肯定的治疗方法。
CONCLUSIONS: Balloon dilation of the frontal ostia has a posttreatment patency rate comparable to those of other endoscopic revision techniques.
结论：额窦球囊扩张术后窦口的通畅程度与其他内镜修正手术的疗效类似。
As the representative of ferritic steel, it has a low rate of thermal dilation and good formability and oxidation resistance.
作为铁素体钢的代表钢种，热膨胀率抵，成形性及耐氧化性优。
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