“钻井定向接头”的概念、定义、翻译、参考文献-科学参考

单词	钻井定向接头
释义	钻井定向接头 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	political rights political risks in overseas investment political ritual political role political rule political scheme directed the countryside of the Kuomintang government political science political science of resources Political Science Syllabus political slogan political socialization political sociology political speech political stability political state political stratification political structure political structure of society political subject political superstructure political system in ancient Greek polis political system of ancient Rome political system of Europe in Middle Ages political theory political thought in Ming dynasty of China

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。