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to phrases
extra-heavy pipe
chem.
厚壁管
dril.
加重管
;
厚壁钻杆
oil
加重管子
extra heavy pipe
tech.
特强管
;
加重管
;
粗管
;
特重管
(子)
;
特厚管
;
加厚管
extra-heavy pipe
:
8 phrases
in 5 subjects
Drilling
1
Engineering geology
1
Mechanics
1
Oil / petroleum
2
Technology
3
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