查询词典 practice drill

Oak is great to drill and tap, so select the size of bolt you want, get the correct drill and tap, and do the job.

橡树是伟大的钻探和发掘，所以选择的大小螺栓您想要的，得到正确的演练及塔，做的工作。

According to the main equipment of Wei 12-1 workover rig and drilling basis data of adjustment well, the hook load and torque of drill string are found out and a new drilling string is presented by using the torque and drag analysis model and calculating software, on which depend to calculate and evaluate the capacity of main drilling equipment of Wei 12-1 workover rig , such as derrick, drawworks, and rotary table, as well as hoisting equipment (traveling block, hook and swivel) and drill line etc.

根据涠12－1修井机主要配套设备和钻调整井的钻井基础数据，运用钻柱摩阻的计算模型，对侧钻过程中钻柱的摩阻/扭矩进行分析计算，提出新的钻具组合，计算大钩载荷及扭矩载荷，并根据计算出的大钩载荷及扭矩载荷，对平台修井机主要钻井设备井架、绞车、转盘、提升设备、钻井大绳等的承载能力进行分析计算，得出分析研究结论，并提出改造的具体思路及相关配套技术的实施方案。

This design main be how average type beam drill electricity charge circuit be in progress design, main content include host circuit design, control circuit design, instruction circuit design and under the control of component choice, not bad come true Z3050 type beam drill starting, stop, be rotating, roll back and a few corresponding protection function.

本设计主要是多普通型摇臂钻床的电控线路进行设计，主要内容包括主电路的设计、控制电路的设计、指示电路的设计和控制元器件的选择，可以实现Z3050型摇臂钻床的启动、停止、正转、反转以及一些相应的保护功能。

Try to control a twenty shot drive drill and then crosscourt to the other side for another twenty shot drive drill.

要记住你不仅仅是盲目的大力击球，而是要先进行20个直线击球，然后是20个斜线球。

CNC Tool: Tool 安威 Taiwan, STANNY fine sebang keep out a knife, BT shank, chuck cutter tube cutter to powerful folder-type holders to extend the pole up discarded fast bit, fine boring holes to fine-tune the system, lock knife Block pull screw bolts, Taiwan Guangjie chuck cylinder rod to extend the handle folder, durable lining Universal milling cutter drill holders, drill chuck Bao Quan, Kyushu, Japan, Japan Institute of precision high-speed SHOEA Dao BORING

数控刀具：台湾AW安威 Evermore粗搪刀刀座，STANNY世邦精粗搪刀， BT刀柄，铣刀把强力铣刀夹头筒夹延长杆舍弃式刀杆舍弃式快速钻头，微调精搪孔系统，锁刀座拉钉螺栓，台湾广杰刀柄延长杆夹头筒夹，耐久搪刀钻铣万用刀杆，铨宝钻夹头，日本九州，日研 SHOEA精密高速刀把镗刀

This paper summarizes the research and development situation on the following aspects: the significance and the basic theory of fitness-for-service assessment of drill pipe, the methods dealing with the undetermined problems during the assessment, prediction for fatigue service life of drill pipe, and so on.

本文对钻杆适用性评价的意义、基本原理、评价中处理不确定性问题的方法、钻杆疲劳寿命预测等方面的研究进展情况作了综述。

The VCL method and the displacement method are used to calculate the Stress Intensity Factors of semi-elliptical surface crack at the root of pipe screws, on the basis of which a simplified calculating model for screws contact is put forward so as to analyse the fracture intensity for oil drill pipe screw coupling. For the semi-elliptical surface crack with different shape and deep ratio at the root of female and male screws and the corner of male flange, the SIF has been studied systemically under inter-pressure, tension, bend and torsion loads and the approximate formulas encluding the structure parameters of oil drill pipe screw coupling, deep ratio and the shape parameters of surface crack are developed.

对工程实际中的多种石油钻杆接头螺纹连接件，就公螺纹齿根、母螺纹齿根、公螺纹台阶转角处存在的不同形状、不同厚度比的半椭圆表面裂纹，在拉伸、内压、弯曲、扭转多种载荷作用下的应力强度因子作了系统研究，在大量有限元计算基础上，建立了包含接头结构参数、裂纹形状、厚度比在内的近似计算公式。

Taiwan eagle, SUS SU bit, special-purpose stainless steel drill bits, drill bits Cinda America, NACHI Drilling Tsui, YAMAWAúand, TANOI field wells silk attack, die, OSG·machine, Japanto attack the rich, silk sheet, Cinda-feng steel reamer, OKAZAKI Japan Okazaki reamer, the brand-name file, standard file, saw blade, straw plate, AMADA sawing zone.

台湾鹰牌、SUS苏氏钻头，专用不锈钢钻头，美国信达钻头，NACHI钻咀，YAMAWA弥满和、TANOI田野井丝攻、板牙，OSG欧士机、日本富士丝攻、丝板、信达锋钢铰刀，OKAZAKI日本冈崎绞刀，各国名牌锉刀、标锉、锯片、秸碟，AMADA锯带等。

The device includes a drill spigot inserting into the marebase sand layer through the upper cover soil layer, there sets air inlet, sand discharging pipe and vibration connecting pipe in the drill spigot; there sets a sand absorption head on the bottom of the air inlet and sand discharging pipe; the bottom of the vibration connecting pipe connects with the vibration head; the sand absorption head is made up of a centre cavity, ring cavity and sand absorption pipe.

该装置包括一穿透上部覆盖土层插入到海底深埋砂土层的钻孔套管，在钻孔套管内，设有进气管、排砂管和振动连接管；进气管和排砂管的下端连接一个吸砂头；振动连接管的下端连接振动头；吸砂头由一中心腔室、环状腔体和吸砂管构成。

The rock-melting drill is of a shape and is propelled under sufficient pressure to produce and extend cracks in solid rock radially around the bore by means of hydrostatic pressure developed in the molten rock ahead of the advancing rock drill penetrator.

这种岩熔钻孔机具有着一种形状，它在足够的压力下才能推进，从而在坚硬的岩石中产生裂缝并使其在钻孔周围成放射状地扩展延伸，它是凭借液体静压力的方式推进的，而这种静压力产生于正前进的凿岩机弹头前方的熔融岩石。

This matter overthrew all basises I learned from Sunday school .

这件事把我从周日学校学到的所有道理都颠覆了。

It's one of the cruel ironies of aging: if you want to remember your favorite restaurants, the less you should eat at them.

这是一个老化的残酷讽刺：如果你想记住你最喜欢的餐馆，你应该更少吃到它们。