您要查找的是不是：
- percussion reverse circulation drill 冲击反循环钻机
- Air driven hollow DTH hammer is applied,along with a set of dual wall drilling pipe and a specially designed reverse circulation bit,to conduct continuous coring reverse circulation drilling. 气动贯通式潜孔锤与双壁钻杆及专门研制的反循环钻头 (获国家发明专利 )配套使用 ,可实现反循环连续取心 (样 )钻进新工艺 ,连续获取的岩样采取率高 ,品质好 ,代表性强。
- At six we were fallen in for drill. 六点钟我们站好队准备操练。
- Pound notes have been withdrawn from circulation. 一英镑面值的钞票已停止流通。
- Large Diameter Grouting Pile Construction by Percussive Reverse Circulation Drill without Mud Pit in Hongkong 冲击反循环钻机在香港无泥浆池施工桩基工程
- 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。
- Harvey discovered the circulation of the blood. 哈唯发现了血液循环。
- 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。
- We observed the circulation of blood in frogs. 我们观察了青蛙的血液循环。
- The old coins have been withdrawn from circulation. 旧硬币已经收回不再流通了。
- She had lots of drill in listening. 她在听力方面受过许多训练。
- Many forged notes are in circulation. 许多假钞在流通。
- This drill can bore through rock. 这台钻机能钻透岩石。
- This magazine has a large circulation. 这本杂志发行量很大。
- The dentist's drill made a lot of noise. 牙钻发出很大的噪音。
- pump reverse circulation drilling technique 泵吸反循环钻进工艺
- These ideas have been in circulation for some time. 这些想法已经流行了一段时间。
- What's the drill for claiming expenses? 费用报销的手续，是怎样的?
- air-lift reverse circulation drilling 气举反循环钻进
