“polished-joint hanger”的概念、定义、翻译、参考文献-科学参考

单词	polished-joint hanger
释义	polished-joint hanger [`päl·isht ¦jȯint ´haŋ·ǝr] ^{PETROLEUM ENGINEERING} A type of tubing hanger that is slipped over or assembled around the top tubing joint in an oil well tubing string.
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