“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	biorthonormal expansion biorthonormalization biorthonormal system BIOS biosafety biosafety and biosecurity biosafety and biosecurity capability building biosafety assessment biosafety certificate for transgenic organism Biosafety Committee biosafety disposal of slaughterhouse waste biosafety facilities biosafety for veterinary microbiology laboratory biosafety laboratory biosafety law biosafety level biosafety of transgenic organisms biosafety risk assessment biosafety risk prediction biosafety science of agricultural genetically-modified organisms biosafety standards biosatellite Biosecurity Actfor New Zealand biosecurity in aquaculture biosensing polymer

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