“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	structural fire engineering structural fissure water structural flame retardant composites structural formula structural-functional analysis structural functionalism structural functionalism theory structural gene structural genomics structural geology structural glued laminated timber structural group structural hazard structural health monitoring structural health monitoring system for ancient buildings structural health monitoring system for high-rise buildings structural health monitoring system for long-span bridges structural health monitoring system for offshore platform structural health monitoring system for railway track structure structural health monitoring system for small and medium bridge structures（groups） structural health monitoring system for tower structures structural health monitoring system for tunnels structural health monitoring system for underground engineering structural health monitoring technology in civil engineering structural hole

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