“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	hydrogen sulfide hydrogen sulfide blowout diffusion hydrogen sulfide detector hydrogen sulfide gas hydrogen sulfide poisoning during drilling and completion hydrogen sulfide protection in oil drilling hydrogen supply module hydrogen transfer polymerization hydrogen transportation hydrogenutilization hydrogen vehicle hydrogeochemical kinetic characteristics hydrogeochemical processes hydrogeochemical zones hydrogeochemistry hydrogeography hydrogeological and water well drilling hydrogeological borehole hydrogeological borehole design hydrogeological calamities hydrogeological condition hydrogeological drilling hydrogeological information system hydrogeological investigation hydrogeological investigation report

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