In addition to being heavier than normal completion components, the wall of a blast joint is often treated to resist the jetting action that may result in the proximity of the perforations.
防冲蚀短管除了壁厚大于正常完井部件外，其管壁通常经过处理，以阻止冲蚀作用的发生，因而不会引起射孔孔眼的接近。
AIM to establish standard animal model of blast injuries in maxillofacial region and to study the injury of articular disc of temporomandibular joint of the wounded side.
目的建立标准的颌面部爆炸伤动物模型，并研究颞颌关节盘的损伤特点。
A new rehabilitating technique using blast expanded joint method is adopted after experimental test, which gains ideal results.
通过试验，采用爆炸胀接法修复，取得了理想的效果。
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