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replacing bit without lifting drills
释义
replacing bit without lifting drills
Encyclopedia
理学
钻进工艺
释
replacing bit without lifting drills
不提钻换钻头
绳索取心钻进过程中,在不起下钻的情况下,将孔底旧钻头单独或随内管总成一起打捞至地面,并将新钻头单独或随内管总成一起下入孔底进行钻进的作业。
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parabolic quadratic surface
parabolic radio telescope
parabolic ray
parabolic reflector
parabolic refractive index optical fiber
parabolic region
parabolic regression
parabolic Riemann surface
parabolic ring cyclide
parabolic rotation
parabolic rule
parabolic sector
parabolic segment
parabolic sheaf
parabolic simply connected domain
parabolic space
parabolic spindle cyclide
parabolic spiral
parabolic subalgebra
parabolic subgroup
parabolic substitution
parabolic surface
parabolic system
parabolic system of differential equations
parabolic throat flume
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更新时间:2025/3/15 20:37:09