In this bode, onsite welding and deformation control of the large pipe and barrel structures have been deeply analyzed, which is very useful for theory and practice.
本文重点对大型管、简构件的现场焊接及变形控制做了深入的分析和探讨，具有较强的理论意义和实际应用推广价值。
We then connected a 55 gallon barrel to the end of the pipe.
我们然后连接了55加仑桶到管子的末端。
Aiming at the special measure object-barrel with rifling, a new type of pipe robot was developed, which was used to measure rifling automatically.
针对带膛线身管这一特殊的测量对象，研制了一种能自动测量火炮膛线的新型管道机器人。
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