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加重钻杆
jiāzhòng zuàngǎn
dril.
compressive service drill pipe
;
extra-weight drill pipe
;
heavy weight drill pipe/heavy wall drill pipe
;
heavy wall drill pipe
;
heavy weight drill pipe
;
havi-wate drill pipe
earth.sc.
heavyweight drill pipe
oil
extra-heavy drill rod
;
extraweight drill pipe
;
heavyweight drillpipe
tech.
extra heavy drill rod
加重【厚壁】钻杆
mech.
heavy wall drill pipe
;
heavy weight drill pipe
加重钻杆
:
10 phrases
in 5 subjects
Drilling
2
Earth sciences
1
Engineering geology
2
Mechanics
2
Technology
3
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