“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	Wang Guan Wang Guanghou Wang Guangqian Wangguangu Pubu Wang Guangyang Wang Guangyuan Wang Gui Wang Gui and Li Xiang-xiang Wang Guifen Wang Gun's Medical Prescriptions Wang Guodong Wang Guoqi Wang Guosong Wang Guotong Wang Guowei Wang Guowei's Commentary on Poetry Wang Guxiang Wang Hai Wanghailou Church Wang Haiyan Wang Haizhou Wang Han Wang Hanlun Wang Hanxi Wang Hao

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