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不提钻换钻头
释义
不提钻换钻头
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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lateral spreading
lateral stabilizer
lateral stiffness
lateral superjunction
lateral surface
lateral symmetry
lateral transfer
lateral twist
lateral ultimate resistance of single pile
lateral vein
lateral velocity
lateral ventricle
lateral vibration
lateral voltage
lateral wave
lateral wing
laterday
later design work of deposit mining
Later Four Wangs
Later Han Dynasty
later heavy bombardment
latericeous
laterifolious
laterite
laterization
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