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- It is very important for drilling parameters test to better drilling parameters,design drill rig,research on drilling technology. 钻进参数检测对钻进参数优化、钻机设计、钻进工艺研究具有重要作用。
- In this paper, by theory analysis on drill bit, drill parameter, ream hole and time factor etc. 但在非开挖中如何运用简单孔口定向方法要求设计及施钻人员必须对钻孔的弯曲特点有较深入的了解,并要求要一定的施工经验。
- Through the orthogonal experiments these drill parameters influencing drilling efficiency, such as granularity, concentration, number of water grooves and edge thickness, were optimized. 试验证明，采用优化参数的套钻可高效地对陶瓷复合构件进行钻孔加工，质量完全满足技术要求。
- It can determine and record six drilling parameters at the same time, and memorize them in the storage. 该仪器可同时测量、记录6项钻进参数，并能用记录器转存回收。
- "Does the traveller clearly define all the drilling parameters including stack height? 钻孔机是否能够清楚地定义钻孔参数，包括堆叠厚度？"
- The theory of multi-object optimization is used to perform an optimized designation of slim hole drilling parameters. 应用多目标优化理论，对小井眼钻井参数进行了优化设计。
- Rock drillability is an important and basic drilling parameter. 岩石可钻性是一项重要的钻井基础数据。
- During gas drilling, both the alteration of the drilling parameters and encountering the reservoir will cause the transient flow of wellbore fluid. 气体钻井过程中,调整钻井参数或者钻遇储层都会引起井内流体的瞬态流动。
- Based on the multivariable random drilling model,the multi objective reliability optimization of deep well drilling parameters is presented. 在多元随机钻井模式理论的基础上，提出了深井钻井参数多目标可靠性优化方法。
- Description is made of the roller-type cutting head, the distribution law of the cutters, as well as the effect of drilling parameters on the drilling efficiency. 介绍了滚刀钻头破岩机理、滚刀的分布规律、以及钻进参数等因素对钻进效果的影响，并通过施工实例对目前滚刀钻头使用中所存在的主要问题进行了分析。
- 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。
- It has presented the index of drilling efficiency expressed by the ration of penetration rate and matrix wear,this determing the optimal drilling parameters based on the latter index. 提出了表示机械钻速和钻头胎体磨损关系的钻探效果指标，并根据后者确定出了规程参数最优值。
- 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?
- 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。
