“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	rocket exploration of the upper atmosphere rocket fairing rocket flow-out test rocket for artificially triggering lightning rocket ground support equipment rocket highway transporter rocket infrared astronomy rocket kerosene rocket mechanism rocket motion equation rocket propellant rocket-ramjet combined cycle engine rocket range safety control rocketry rocket sled rocket static test-firing facility rocket structure rocket train rocket ultraviolet astronomy rocket X-ray astronomy rocket γ-ray astronomy rock explosibility rock failure rock failure criterion rockfall disaster

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。