“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	elliptic orbit elliptic parabola elliptic-parabolic elliptic-parabolic equation elliptic-parabolic motion elliptic paraboloid elliptic paraboloid of revolution elliptic partial differential equation elliptic pencil elliptic pencil of circles elliptic pencil of lines elliptic pencil of rays elliptic pencil of spheres elliptic plane elliptic point elliptic polarization elliptic polynomial elliptic pseudo-distance elliptic pseudoprime elliptic quadratic hypersurface elliptic quadratic surface elliptic rational function elliptic ray elliptic region elliptic restricted problem

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。