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单词
mandrel hanger
释义
mandrel hanger
mandrel hanger
[
′man·drəl ‚haŋ·ər
]
(petroleum engineering)
A device used to provide a liquid- or gas-tight seal (blowout preventer) between oil-well tubing and the tubing head.
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更新时间:2024/12/22 23:51:27