由于辐射水平很高，不大可能把Object Shelter栓在一起或者焊接在一起，因此每过10年这个装置就到了崩溃的边缘。
Owing to the high levels of radioactivity, it had been impossible to bolt or weld the Object Shelter together, so within a decade it was on the verge of collapse.
在螺旋焊管生产中采用铣边机铣削带钢边缘和坡口，为螺旋焊管成形、 焊接创造了有利的条件。
To adopt milling machines to prepare strip edges and groove to give good condition for forming and welding of spiral submerged arc-welded pipe.
钢带的边缘状况是影响焊管成型和焊接质量的主要因素。
The edge condition of strip steel is the main factors affect pipe forming and weld quality.
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