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- Development of downhole drill motor and problems with its application. 井下动力钻具的发展及其在推广应用中的问题。
- The unit is composed of a 6 1/8" downhole drilling control valve and a 6 1 /8" RTTS multifunction packer. 该装置由61/8英寸钻井井下控制阀和133/8英寸多功能RTTS封隔器组成,可将钻具悬持在井中,密封井眼,起到很好的防台风临时弃井效果。
- Turbodrills is very important downhole drilling tools in petroleum drilling engineering,especially in deep well and deflected well. 涡轮钻具是石油钻井工程中的一种重要井下动力钻具，在深井和定向井钻井中有着广泛的应用。
- At six we were fallen in for drill. 六点钟我们站好队准备操练。
- The sound of that drill jangles horribly on the nerves. 那台钻机的声音响极了，十分刺耳。
- You'd better set a goal before you start the drill. 练习开始前，你最好设定一个目标。
- After a long drill he told the squad to fall out. 操练了好半天之后，他让这个班解散了。
- She had lots of drill in listening. 她在听力方面受过许多训练。
- This drill can bore through rock. 这台钻机能钻透岩石。
- The dentist's drill made a lot of noise. 牙钻发出很大的噪音。
- Downhole drill hammers and bils 潜孔冲击器和钻头
- What's the drill for claiming expenses? 费用报销的手续，是怎样的?
- downhole drill 潜孔钻机
- CS-165 downhole drill Cs-165型潜孔钻机
- The class is chopped up into small groups for oral drill. 为进行口语训练，班级分成为几个小组。
- The pupils filed out of the room during the fire drill. 在消防演习中，学生们排成纵队走出房间。
- It's an electric drill with a range of different attachments. 这是一个带有各种配件的电钻。
- A shaft on which a working tool is mounted, as in a dental drill. 心轴用于安装工具的蕊棒，如牙钻蕊棒
- As the diamond tip of the drill revolves, it is lubricated by mud. 在钻机的金刚钻头旋转的时候，泥浆便进行了润滑。
- Finite element analysis of soil deformation subjected to the percussion of downhole drills 潜孔锤冲击作用下土体变形的有限元分析
