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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
Drilling2
Earth sciences1
Engineering geology2
Mechanics2
Technology3

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