... stiction 静摩擦 stiff assembly 刚性组合 stiff bottom hole hook up 刚性的下部钻具组合 ...
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stiff stabilizer assembly 刚性稳定器组合
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For every piece, the stiff, hollow pipes that connect the drill assembly with the rig at the surface have to be assembled as the drill is lowered and dismantled when it comes up again.
每一段坚实、中空的连接钻取机索导管的冰芯只能被切碎，因为钻取机再次出来时变得更低了也更细了。
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