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- multi diameter drill 阶梯钻头
- The theoretical and technical problems to be researched for large diameter drilling are outlined with its application prospect appraised. 简述了大直径钻井需要研究的理论和技术问题,并对应用前景作了评价。
- This lens can magnify 20 diameter. 这个透镜能放大20倍。
- At six we were fallen in for drill. 六点钟我们站好队准备操练。
- Research on large diameter drilling in hard rock 大直径硬岩钻进技术的探讨
- The diameter of the tree-trunk is about 2 meters. 这树干的直径大约是2米。
- 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。
- The axis of a circle is its diameter. 圆的轴线是其直径。
- Measure the diameter of this circle. 量一下这圆的直径。
- This drill can bore through rock. 这台钻机能钻透岩石。
- We must gauge the diameter of wire first. 我们必须先测量电线的直径。
- The dentist's drill made a lot of noise. 牙钻发出很大的噪音。
- What's the drill for claiming expenses? 费用报销的手续，是怎样的?
- A tube with a very small internal diameter. 毛细管一根内径十分细小的管子
- 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。
- multi diameter shaft 阶梯轴
- Cost Control to Combined Roller Bits in Large Diameter Drilling 大口径牙轮组合钻头施工中的成本控制
