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to phrases
auger stem
archit.
螺旋钻杆
棒
construct.
螺
旋
钻杆
dril.
钻头与震击器之间的钻具
el.
冲击式钻杆
eng.geol.
钻杆
;
钻棒
oil
螺旋钻柱
tech.
螺旋钻杆
auger stem
:
4 phrases
in 2 subjects
Engineering geology
2
Technology
2
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