查询词典 practice drill

The fracture analysis includes the macro-fractography and micro-fractography, the experimental analysis of the chemical components, the mechanical properties, and the metallography of drill pipes, and the stress conditions analysis of drill pipes in air drilling.

失效分析内容主要包括断口宏观分析和微观分析，钻杆材料化学成分、力学性能和金相组织试验分析，钻杆在空气钻井过程中受力条件分析等。

Designed air drill air drill depth of 80-100 meters in diameter 90-150mm, with the impactor matching can be horizontal, vertical, tilt and other parties bit rock blasting.

设计钻空深度80-100米钻空直径90-150mm，与冲击器配套后，可以进行水平、垂直、倾斜等各方位凿岩爆破。

Water-cooled Screw series of hand-held air leg rock drill series-type rock drill boring Loader Series drilled more than 300 varieties, such as excavators.

水冷式螺杆系列手持式凿岩机系列气腿式凿岩机系列开凿装载机开凿挖掘机等三百多个品种。

Our company existing each kind of specification (SS3--SS47) Bai Zuan, the color drill, the color to drill; The color has the light pink shallowly, blue, shallow purple, light green, light yellow, golden yellow, the amber, the smoke yellow and so on ten kind of color, and may plate the AB color, may dye.

我公司现有各种规格（SS3--SS47）的白钻、彩钻、色钻；颜色有浅粉、浅兰、浅紫、浅绿、浅黄、金黄、琥珀、烟黄等十余种颜色，并可镀AB彩，可染色。

Wood auger bit, bell hanger, brand wood drill, center drill, cutting saw, hole saw.

7E27(E2E27)木工支罗钻，三尖木工钻，中心钻，锯片，带孔钻，开孔器。

Based on the machine development, a research and analyses of auger drill bits with different kinds of drill tips and soil cut blade angles were carried out in tree planting field.

在设备研制成功的基础上，对钻孔机钻头不同钻尖、不同切土刀刃角进行了实地试验研究和分析。

Operate tracked or truck-mounted drill equipped with auger or other attachment to drill holes for building foundations or pilings

操作配有螺旋或其他附件的履带式或车载旋转钻井机在地基或木桩上钻洞。

With the help of modern computational fluid dynamics tecnology, this thesis carries on a numerical simulation of annulus multiphase flow of the conventional auger drill stabilizer; it points out the deficiency of the annulus gas in cutting-carrying and lifting; and attempts to develop a drill stabilizer that are suitable for the gas drilling.

本文试图借助现代计算流体力学技术，对常规螺旋钻柱稳定器环空多相流动规律进行数值模拟研究，指出在环空气体携岩举升方面存在的不足，开发一套适合于气体钻井的新型钻柱稳定器，提出全井段环空流场改善方法，实现气体钻井防斜打快，减少冲蚀，提高井眼净化能力的目的。

The so-called cutter location point, the flat end mill tool axis refers to the point of intersection with the bottom tool; for ball-end milling is the ball part of the core; for tools is the tip; the drill is the drill point; for wire electrode cutting machine, it means that the axis line of the electrode surface and the focus of parts.

所谓刀位点，对于平底立铣刀是指刀具轴线与刀具底面的交点；对于球头铣刀是指球头部分的球心；对于车刀是指刀尖；对于钻头是指钻尖；对于线电极切割机床，则是指线电极轴心与零件面的焦点。

Supply contact group, were positive,, mountain hafnium, butt Qi, Wang main parts such as automatic lathes, table lathes have, belts, steam-driven chuck Block, Grinding, open closed claw, Tool,òsmall motors, clutches, cam blanks, chuck, drilling chuck, cam, cam Events, cam thimble, tools, wheel discs, retaining materials arm, S plate, rolling round silk flower attack, attack left tooth wire, drill bits, L-drill, round bars, tungsten steel round bars, die, plate braces, dental regulation, cone, non-ditch attack silk, silk YAMAWA attack Japan, Japan OSG silk attack.

供应洽群、名阳、昌勇、山铪、錡夆、王主等自动车床零配件，有桌上车床、皮带、汽动夹头座、磨刀机、开闭爪、车刀、打油小马达，离合器、凸轮毛胚、夹头、钻尾夹头、凸轮、活动凸轮、凸轮顶针、车刀、砂轮碟，挡料臂、S型板、滚花轮丝攻，左牙丝攻、钻头、左旋钻头、圆棒，钨钢圆棒、板牙、板牙套、牙规、牙轮、无沟丝攻、日本YAMAWA丝攻、日本OSG丝攻。

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。