“downhole pressurized jet assisted drilling system”的概念、定义、翻译、参考文献-科学参考

单词	downhole pressurized jet assisted drilling system
释义	downhole pressurized jet assisted drilling system Encyclopedia 工学钻井新技术与装备释 downhole pressurized jet assisted drilling system井下增压射流辅助破岩钻井装置通过安装在钻头上方的井下增压装置，将钻柱中循环的部分钻井液增压后形成增压射流，经钻头的超高压喷嘴喷出，冲击井底后直接或辅助钻头破碎岩石，将水力破岩与机械破岩紧密结合起来，达到提高钻速目的的钻井装置。
随便看	treaties on the safe use and environmental management of chemicals treating both manifestation and root causes disease treating cold syndrome with heat methods treating deficiency syndrome with tonifying methods treating different diseases with same method treating excess syndrome with purgative methods treating false-cold syndrome with cold methods treating false-heat syndrome with heat methods treating heat syndrome with cold methods treating obstructive syndrome with dredging methods treating obstructive syndrome with tonifying methods treating same disease with different methods treating the lung to subdue hyperactivity of the liver treating the spirit treatise Treatise Concerning the Principles of Human Knowledge Treatise of Lu Ban Treatise of the Jewel-nature of Ultimate Single Vehicle Treatise on Architectural Methods Treatise on Astrology in the Kaiyuan Reign Treatise on Calligraphy Treatise on Classics from the Book of Sui Treatise on Cold Damage and Other Diseases Treatise on Cold Pathogenic Diseases Treatise on Epidemic Febrile Diseases

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