“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	seedless fruit seedless rotating crucible growth method seedling seedling bank seedling breeding of crab seedling breeding of Litopenaeus vannamei seedling breeding of Portunus trituberculatus seedling breeding of shrimp seedling cultivation of Gracilaria tenuistipitata seedling cultivation of Gracilariopsis lemaneiformis seedling cultivation of Pyropia seedling cultivation of Saccharina japonica seedling cultivation of Sargassum fusiforme seedling cultivation of seaweeds seedling cultivation of Undaria Pinnatifida seedling death due to lifting by alternate soil frozen and thawing seedling facilities seedling gradation seedling greenhouse seedling harvesting,storing and shipping seedling horse stool seedling lifter seedling planting seedling quality seedling raising in dryland

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。