“orientation sub”的概念、定义、翻译、参考文献-科学参考

单词	orientation sub
释义	orientation sub Encyclopedia 工学定向井工具释 orientation sub钻井定向接头为陀螺测斜仪、随钻测斜仪等测量仪器提供固定方向坐放位置的配套工具。
随便看	system conversion system CPU time system crash system deadlock system degradation system description system design system design of micro electro-mechanical system，system design of MEMS system design report system detailed investigation system determinant system development system development life cycle system development life cycle, SDLC system diagram system directory system distribution system documentation system dynamics analysis system dynamics method system dynamics model system dynamics simulation system efficiency system engineering system engineering for science and technology

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。