“油管头”的概念、定义、翻译、参考文献-科学参考

单词	油管头
释义	油管头 Encyclopedia 工学井口装置释 tubing head油管头油井生产管柱最上层装置。用于悬挂油管及密封油管与套管之间环形空间，上部接采油树配合生产。
随便看	doublet double-tagged PCR double tagging double-tagging double-tailed test double talk double tangent double-tangential knot doublet antenna double taxation double taxation conventions double-taxed household doubleteeth pubescent angelica root double tensor doublet flow doublet function double thread polymer double-time Green function double-time Green's function doublet lens doublet objective double torus double-track grain prices system double tracks sign double track system for electronic records and paper records

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。