| 单词 | drill stem |
| 释义 | drill stem in the Oil and Gas Industry (drɪl stɛm) Word forms: (regular plural) drill stems noun (Extractive engineering: Field development, Equipment) drillA drill stem is all the parts of the equipment used for rotary drilling. Rotary methods involve rotating a drill stem on to which a bit is attached to cut into the geological formation. A bit attached to a rotating drill stem is used for rotary drilling. A drill stem is all the parts of the equipment used for rotary drilling. |
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