“钻具止回阀”的概念、定义、翻译、参考文献-科学参考

单词	钻具止回阀
释义	钻具止回阀 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	doctoral student education doctor blade device doctor blading doctor degree Doctor Gan doctoring doctor of education doctor of engineering doctor of medicine doctor of sciences doctor of veterinary medicine doctor-patient communication doctor-patient non-technical relationship doctor-patient relationship doctor-patient technical relationship doctor practicing license system doctor's degree certificate Doctor Who doctor workstation system Doctor Zhivago doctor’s obligations Doctrina Brum doctrinal theology doctrine of affactions Doctrine of American System

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。