在套管的提升过程中，由于提升力的作用，铰链接头的失效形式一般表现为铰链拉脱或强度不足。
The hinge is apt to be pull apart and the strength of the hinge connection is insufficient owing to the action of the elevating force in the course of casing lifting.
目的：探讨大鼠l5神经根受压后，益气化瘀方在神经再生修复过程中对神经肌肉接头部神经元的作用和表现。
AIM: To study the effect of Yiqi Huayu Fang on neurons at neuromuscular junctions during regeneration and repair of nerve after L5 nerve root compressed in rats.
在环境介质中，钛制再沸器管板接头焊缝长期受交变应力的作用，导致管板焊缝开裂。
At the environment medium, the tubeplate joint welds of titanium reboiler were constantly effected by the alternation stress, welds cracking was occurred in the end.
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