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butt welded pipe
bridg.constr. 对缝焊管
dril. 对焊管
met. 直缝焊管
oil 焊缝管
butt-welded pipe
met. 直缝焊管
oil 对焊管
tech. 对缝焊管; 对缝焊接管; 对头焊管; 焊缝管
butt -welded pipe
: 11 phrases in 3 subjects
Metallurgy8
Oil / petroleum2
Technology1