“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	secondary pollution secondary pollution control for waste incineration power generation secondary pollution; re-contamination secondary precious metals secondary pressure standard secondary prevention secondary prevention of cancer secondary process of radiation chemistry secondary production secondary productivity secondary professional education secondary professional education of archival science secondary prominence secondary quantity secondary quantum number secondary quartzite secondary radar secondary radiant secondary radiation secondary radiation force secondary rainbow secondary rare earth secondary reaction secondary recovery of cave area secondary recovery of lean ore

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。