查询词典 reciprocating drill

2 Mm(8)on Tarim Oilfield,the bending strength of failure drill collar is calculated and then it is found that the bending strength of drill collar doesn t match condition of wells lead to failure of drill collar,which is the main reason.

对失效钻铤的弯曲强度比进行了计算，结果表明，弯曲强度比与井况不匹配是造成钻铤失效的主要原因。

It is pointed out that the essential drilling problem is the unsuitability of the drill pipe,drill collar,drill bit and drilling equipment for the needs of deep large diameter wellbore drilling.

在系统分析了大直径井段中普遍存在的钻井问题的基础上，指出当前深井大直径钻井技术的根本问题，是钻具、钻头、钻井装备与大直径井眼的工艺要求不相适应。

Drill If you want to drill a hole in a piece of wood, you will need a drill.

如果你想在一块木头上钻孔，就需要一个钻机。

Grant prideco drilling products.co., ltd tianjin tanggu branch is wholly owned subsidiary of nov grant prideco is the world's leader in drill stem technology and drill pipe manufacturing, a global leader in drill bit technology and manufacturing, and a leading provider of high-performance engineered connections and premium tubular products.

格兰特钻具有限公司北京分公司是国民油井华高所属的一家全美资公司。格兰特公司在钻柱技术和生产以及在钻头技术和生产方面一直处于全球领先地位。同时也是全球最主要的高性能钻杆供应商之一。

In actual operation of drill rig, premature damages of rock drill occur frequently, while the situations of damage are not the same due to different rock drill manufacturers.

在凿岩台车的实际使用过程中，凿岩机过早损坏的现象经常发生，但由于凿岩机的制造商不同，损坏的情况也不尽相同。

It is the first time that the expert control theory is applied to the blasthole drill control described in the paper, where the expert control structure and strategy for blasthole drill control are studied. At last, an integrated software for the expert control is compiled with Borland C++4. 0 under the operation system of Windows95. It includes the following functions: the simulation for control theory and control structure, the realization of the blasthole drill control.

作者用Borland C++4.0在Windows95环境下编制了专家控制的集成软件系统，一方面对控制方案及算法进行了仿真研究，另一方面针对YZ-55型牙轮钻机的实际工况设计了软件控制功能；并按照牙轮钻机钻进控制的专家控制体系与控制策略，在实验室对控制算法与控制硬件系统进行了实验验证。

Dremel Minimite Drill: If you're going to get serious about bead-making or polymer clay you may want to invest in one of these small drills. I use mine for drilling holes in baked beads. A drill press also allows you to stand the drill upside down leaving hands free to hold the bead or piece as you

迷你小打孔器：如果你主要想做陶珠，你可能要买一个这种迷你的小打孔器，他可以直接把烤好的柱子放在上面，而不需要你用手拿着珠子，就可给珠子穿孔，操作方便，安全。

The types GCPS-20 drill the machine is a kind of compound typemulti-function drill the machine, in order to adapt the our countrydevelopment and demands of the deep foundation and consecution walland marine hydraulic engineering, the bridge engineering, combinethe big caliber to drill the machine to infuse to note the stakeand the characteristics of underground continuous wallconstruction, in order to solve to become the bore but research tomanufacture in complicated geologic strata, hard rock, significantexaltation of ability of special egg stone layer, sill, the stonelayer construction efficiency, is a more economic valid method invariously become the bore method.

GCPS-20型钻机是一种复合式多功能钻机，为适应我国深基础工程和连续墙以及水利工程、桥梁工程的发展与需要，结合大口径钻机灌注桩和地下连续墙施工的特点，为解决在复杂地层、硬岩中成孔而研制，特别卵石层、基石、漂石层能大幅度提高施工效率，在各种成孔方法中是比较经济有效的方法。

There are two kinds of gun drills ,namely ,the center-cut gun drill used for drill blind holes and the trepanning drill .

有两种枪钻，即center-cut枪钻用于钻盲孔、行演练。

Through analyzing the s tressed state of each part of the drill string in borehole,the four main charact eristics and basic reasons of the drill string failure that often occurs and is of general character are analyzed and the feasible,scientific and effective meas ures for preventing these common drill string failure accidents are emphatically proposed in this paper.

文章从分析钻具在使用过程中的受力情况出发，根据钻柱各部位在井内的受力情况，剖析了四种经常发生的、带共性的钻柱失效的主要特征及根本原因，重点提出了比较可行的、科学的预防这几种常发性钻具失效事故的有效措施和看法。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。