查询词典 drill

The removal mechanisms of Kevlar fiber composites and engineering ceramics are analyzed, the machining mechanisms of the two materials with the hot-pressed sintering diamond trepanning drill are researched.

分析了凯芙拉纤维复合材料和工程陶瓷材料的去除机理，探讨了热压烧结会刚石套料钻钻削两种材料的加工机理。

Shanxi Golden Diamond Petroleum Drill Collar Tools Manufacturing Co., LTD Subordinates in Third geological engineering bureau of Shanxi geological prospecting institute.Is a whole people state-owned enterprise, professional manufacturer of oil drilling.

山西金钻石油机具制造有限公司隶属于山西省地质勘察局第三地质工程勘察院，是一家全民所有的国营企业，专业石油钻具制造商。

Study on bond and diamond of diamond core drill bit for reinforced concrete;2. Also glass ceramic is used as the bond of CBN grinding wheel by examining the properties of new bond .

研究了微晶玻璃中加入低熔物、成核剂后对微晶玻璃热处理曲线、微晶量及微晶体尺寸的影响，并通过测试改性微晶玻璃的软化温度和热膨胀系数对CBN磨粒的把持强度，进而将微晶玻璃用作CBN砂轮结合剂的作用作了研究，经过在数控凸轮轴磨床上的试验证明，微晶玻璃结合剂的CBN砂轮的磨削效果很好。

Does Shanghai international diamond exchange retail bare drill?

上海国际钻石交易所零受理个人购买裸钻旳业务吗？

Our main products have diamond cut slices slicing diamond, diamond file, diamond grinding wheel, diamond drill hole, diamond grinding, diamond whetstone, diamond shaped non-standard total of 8 major series, of which more than 90% of exports to Europe , the Americas, Oceania, the Middle East and Southeast Asia, dozens of countries and regions, are popular among clients welcome.

本厂的产品主要有金刚石切磨片、金刚石切片、金刚石锉刀、金刚石磨轮、金刚石开孔钻、金刚石磨针、金刚石磨石、金刚石非标异型共8大系列，其中90％以上产品出口到欧洲、美洲、大洋洲、中东和东南亚等数十个国家和地区，深受广大客商欢迎。

From Australia's superb hot molding and powder metallurgy technology and strict quality control to avoid the domestic general caused by hot-pressing sintering diamond serious carbonation, damage a common problem, with a diamond drill bit than electroplating package insert firmly with the steel body connected to a reliable and never out of the superiority of teeth.

来自澳大利亚精湛的热成型和粉末冶金技术以及严格的质量控制，避免了国内一般热压烧结造成金刚石严重碳化，损害的通病，又比电镀钻头具有金刚石包镶牢固，与钢体联接可靠，永不掉齿的优越性。

Diathermy: Forging wrenches, sockets, bolts, nuts, hot-rolled twist drill, field of application to be developed.

4；透热：锻压扳手、套筒、螺栓、螺母、热轧麻花钻等，适用领域有待开发。

According to lift method and Hooke's law and applying differential and integral calculus theory, calculated equation for free point of these string is reduced respectively,and considering influence of collar and adding power from stem to it, corrected coefficient to drill stem is determined.

对在井中被卡的单一管柱和组合管柱分别进行了受力分析；采用提升法，依据虎克定律，应用微积分理论，分别推导出了单一管柱和组合管柱的卡点计算公式；并且考虑了管柱接箍、管柱加厚对其影响，确定了管柱修正系数。

New ideas and methods in the paper:1 The formulas on perforated casing collapse strength were deducted, which offereda convenient method to analyze the relationship between casing collapse strength and perforation;2 The stress and displacement formulas on the system of casing, cement anddeformation under the non-uniform load were deducted, which offered the theoretical found for designing optimally casing string;3 The relationship between structure in-situ field of whole oil field and casing failurewere studied, which offered the scheme for the prediction of casing failure. The process of study in the paper:1 For simulating the relationship between the structure in-situ field and the casingfailure in the oil-deformation, the tests of the uniaxial tensile, compress, tnaxial compress and dilatability were made on the samples of the drill cores from deformation of casing failure position in Yuejing II oil field.

本文的主要创新： 1推导出了射孔套管抗挤强度的解析式，为分析射孔与套管强度的变化关系提供了简便的方法； 2推导出了非均匀地层载荷作用下套管、水泥环和地层组合体的应力和位移解析式，并非均匀作用下套管柱优化设计提供了理论依据； 3研究整个油田区块构造应力场与套管损坏关系，为预测套管损坏提供了可行方案；本文的研究过程如下： 1为模拟构造应力场与油层段套管损坏关系，做了大量的岩石单轴抗拉、单轴抗压、三轴试验以及岩石遇水膨胀试验，获得了研究区块岩石的弹性模量、泊松比、内聚力、内摩擦角以及岩石的线膨胀系数，这此数据为本文研究油层段套管损坏机理研究的理论分析和有限元法提供了实验数据。

It is at the beginning such, the person that dingdong atelier collected the game era that we rely on dozen of game this batch to make money to drill is done to our game task, next we can take money.

一开始是这样，叮当工作室聚集了我们这批依靠打游戏赚钱的游戏代练者给我们游戏任务做，然后我们就可以拿到钱。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。