... step by step concentration 逐级提浓 crack of welding seam 焊缝开裂 preoperative chemotherapy 手术前化疗 ...
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针对焊缝开裂情况及原因，采用了在高温、低压装置不停工在线补焊方案。
Aimed at the cracking and its reasons, on - line patching was carried out without shutting down high temperature low pressure plant.
文章分析了直管对接焊缝开裂和掌形管开裂的原因，并提出了相应的防护措施。
In this article an analysis is made on cracking reasons of the straight tube and a palm welding and the relative prevention measure is put forward.
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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