“drill string non-return valve”的概念、定义、翻译、参考文献-科学参考

单词	drill string non-return valve
释义	drill string non-return valve Encyclopedia 工学井下工具释 drill string non-return valve钻具止回阀在内防喷系统中，连接于钻杆和钻铤间的防喷装置。
随便看	computerism computerite computerizable computerization computerize Computerized Adaptive Personality Testing Computerized Adaptive Screening Test computerized adaptive test computerized adaptive testing computerized axial tomography computerized flat knitting machine computerized forecasting method Computerized Information Retrieval computerized log computerized polygraph system computerized simulation computerized telescope computerized tomography computer language computer maintainability computer maintainability technology computer maintenance computer management computer-mediated communication computer memory unit

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。