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- The drill bit well. 这钻头好钻。
- Support the drill bit & MOS team on other production duties. 协助钻头及矿山安卡生产线的其他工作任务.
- Change the flute structure to study the contrast of the floe field, provide the basis for the drill bit flute design. 改变排屑槽的分布方式，研究井底流场变化规律，为钻头排屑槽的设计提供依据。
- The resistivity measured at the drill bit by a measurements-while-drilling (MWD) tool. 利用随钻测井仪（MWD）在钻头附近地层测量的电阻率。
- Lubrication may be especially important on extended reach or horizontal wells where the friction between the drill pipe, drill bit and rock surfaces must be kept to a minimum. 对延伸区域或水平油井而言,润滑可能尤为重要,因为在这些地方,钻杆、钻头和岩石表面间的摩擦必须保持在最低水平。
- Press the central area of the button cap of the handpiece with right hand in the same way and take the drill bit out with left hand while the drill bit is taken out. 请使用随机附带的按压工具，安装钻针时请先将钻针装于机头轴孔中，然后装入按压工具不带中心顶针的一侧，用力将钻针推入转轴中。
- By forming a thin film around the drill bit,drill assembly,thus preventing the balling of the drill bit and drill pipe,the ROP accelerators rendered the mud lubricity and incre... 机械钻速提速剂能在钻头、钻具组合等金属表面形成一层薄膜,防止钻屑黏附于钻头和钻具上发生泥包,从而起到润滑的效果,提高了钻速。
- Oil whooshed up when the drill hit the well. 当钻孔机钻井时，石油喷了出来。
- Since the deflection of the traversing casing influences the operation of pipe laying at a great degree, a direction controlling system of the drill bit on the horizontal auger is developed. 鉴于在役套管螺旋钻机均无控向装置,管线敷设中常因穿越套管偏斜而无法施工的状况,研制了套管螺旋钻机钻头控向系统。
- SC can remarkably inhibited mud shale dispersion, keep the borehole wall steady.At the same time, on the base of inherent these, SC form hydrophobic property membrane on the drill bit and BHA. 实验表明，本文所研究的产物中具有一定分子参数的共聚产品耐盐、抗钙、耐温性好，具有较强的抑制性和润滑性以及降失水能力，是一种多功能的新型两性离子聚合物。
- 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。
- A core drill bit consists of a steel tube with diamond segments brazed or laser welded on the drilling end. 核心钻头由一钢管或激光焊接金刚石钎环节就完钻。
- What's the drill for claiming expenses? 费用报销的手续，是怎样的?
- Series HD high air-press DTH are designed as a hammer drill. They differ from other rock drills, however, through continuous operation down against the drill bit. HD系列高风压冲击器是一种冲击凿岩工具，但他与其它凿岩工具不同的是，凿岩过程中它始终留在孔的底部，活塞直接冲击钻头。
- The fish were biting well yesterday. 昨天鱼上钩不少。
- During drilling, the drill bit is with drawn inside the DTH and pressed against the drive chuck.The piston strikes directly against impact surface of the shank of the bit. 钻进过程中，钻头被推进冲击器，并压在卡钎套上，此时活塞直接冲击钻头进行凿岩。
- 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。
- This knife is dull and doesn't bite well. 这把刀子很钝，用起来不方便。
- The drilling troops mustered on the hill. 演习部队在小山上集合起来了。
- The noise of the drill pounded at my ears. I thought I would lose my hearing. 钻机的噪音隆隆震耳。我想我的耳朵都要震聋了。
