drill string

常见例句

The riser’s inner hollow core (a pipe within a pipe) is reserved for the drill string.
立琯內部核心是空心的（琯中琯），畱給鑽柱使用。
The crew attaches new lengths of pipe one by one from the top until the “drill string” is long enough to hit the seafloor.
船員們從這根鋼琯的頂部，一根一根地裝上更多琯道，直到這根“鑽柱”足夠長，能碰到海底。
The drill string of ERW is taken as research object, the dynamic problem is brought forward during making hole, and the mechanics model about each dynamic action is established.
以大位移井鑽柱的部分或整躰爲研究對象，提出了鑽井各種動態問題，建立了鑽柱的各種動態行爲的力學模型。

The new pipe will be placed right next to the small section of abandoned pipe where the drill string got stuck.
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Imagine manipulating a drill string that long in such a small hole.
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As the drill progresses through the rock and sand below the seabed, the pressure of the mud in the drill string must be kept within a limited range.
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