drill相关论文
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(Ti(1-x)AlxN) coated drill is a new product of Mitsubishi Co.Its peculiarities are illustrated briefly in the technical ......
通过文献资料法、专家访谈法、实地考察法对'五虎少林会'演练内容及提升对策进行研究,'五虎少林会'借鉴了戏剧的......
We report a new application of optical coherence tomography(OCT) to investigate the cranial meninges in an animal model ......
Enhancement of technology and techniques for drilling deep directed oil and gas bore hole is one of the most important p......
Drill pipe products are the most critical service requirement,the highest performance requirement and the highest qualit......
The flow stress behavior of grade G-105 steel(API standard) for oil drill pipe in hot compressive deformation was studie......
A stuck drill string results in a major non-productive cost in extended reach drilling engineering.The first step is to ......
In high sour gas reservoir drilling process, it happens occasionally that high-strength drill pipe suffers brittle fract......
The effects of CO2 pressure, temperature and concentration on asphaltene precipitation induced by CO2 were studied using......
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Based on the kinematic relationship of the drill, drill point and workpiece and the coordinate systems founded,the mathe......
流钻(flow drill),是在高速旋转并施加一定的压力条件下,与所加工的金属板材摩擦生热,通过金属材料的热塑性变形,钻挤出孔的一种......
一、关于双宾语动词 1.我们知道有些英语动词要求有两个宾语。如: We give the drill rotational motion.我们使钻头获得旋转运动......
In the hole equipment fordiamond drillingA basic review of the various standards, sizes, types ofequipment, and indicate......
Neutron Activation Studies of the Geochemical Behaviours of 26 Elements in Deep-sea Drill Core Sedim
The geochemical behaviours of 26 elements in deep-sea drill core sediments from the Indian Ocean havebeen investigated ......
Based on the data developed from various natural waters in the Qinghai Lake area and ostracodeshells present in drill c......
The grinding wheel profile is very important for a twist drill flute as it will directly affect the drill’s performanc......
The feasibility of fenestration operation in middle ear bone with pulsed infrared laser is evaluated. Healthymale New Z......
Experimental examinations and analyses have been made of the sediments from drill holes in the Zhuhai area, Guangdong P......
The first-stage developmentproject for Chunxiao Gas Field,that is the largest gas fielddiscovered by Sinopec CNSPCPetrol......
Mineral inclusions of zircon and UHP metamorphic evidence from paragneiss and orthogneiss of pre-pil
Coesite inclusions, together with omphacite, jadeite, garnet and phengite inclusions, were identified in zircons separat......
介绍了以回转双曲面作为麻花钻后刀面的数学模型 ,设计参数与刃磨参数的关系。针对该钻型的特点 ,提出用钻尖主刃的外缘和横刃转点......
Holocene Yellow Silt Layers and the Paleoclimate Event of 8200 a B.P. in Lop Nur, Xinjiang, NW China
Many yellow silt layers have been identified in the Holocene sediments in the last lake of Lop Nur (playa), Xinjiang, n......
A new type taphole drill was designed. The vibration properties of the drill-punch mechanism for the new type taphole dr......
Considering the stratum anti-drilling ability,drill bit working conditions,drill bit application effect and drill bit ec......
The Mr Clock Radio looks like a creation from some science fiction movie, holding the distinction of being the first rob......
This light green jade pendant, measuring 48 cm, was unearthed at the Zenghouyi tomb. It was made from five pieces of ja......
Finite element analysis of thermal residual stresses at cemented carbide rock drill buttons with cob
The aim of this study is to apply the concept of functionally graded materials(FGMs) to cemented carbides and to develop......
Model Diamond-100A-D core drilling machine with diamond bit is suitable for the drilling at any slope angles in galleri......
1985 is the last year of “The Sixth Five-Year Plan” period, which saw great progress in mining science and technology......
In order to apply a swirling jet to a PDC drill bit, the nozzle performance influenced by nozzle inlet geometric paramet......
复合材料被广泛应用于航天、国防、化工与运输业,但它却是一种让人既爱又恨的构件材料.究其原因,系复合材料既具有优秀的机械特性(......
Bearing capacity and load transfer mechanism of a static drill rooted nodular pile in soft soil area
The static drill rooted nodular pile is a new type of pile foundation consisting of precast nodular pile and the surroun......
--Increasing sample and core recovery-In sampling operations,the column of mud in a drill hole helps to retain the sampl......
Xingkai Lake is situated at mid-high latitudes,where the climate is dry and cold in winter due to the regime of the Mong......
With the development of drilling technology,the oil/gas well has evolved from its early vertical straight form to the in......
Multifractal Analysis of Element Distribution in Skarn-type Deposits in the Shizishan Orefield,Tongl
A series of element concentrations sampled from four drill cores with a length about 1000 m into different skarn-type de......
Random Difference of the Trace Element Distribution in Skarn and Marbles from Shizishan Orefield,Anh
Spatial distribution patterns of element concentrations can reflect the information of the mineralization processes. Bot......
Natural carbonate core samples with artificial fractures are often used to evaluate the damage of fractured carbonate fo......
Rock drill-ability anisotropy has significant effects on directional drilling and deviation control. Its evaluation is a......
The transient response to longitudinal impact of flexible rods with Hertz contact is closely related to the extent of de......
Microsoft公司的OLAP服务器,已逐渐发展成为第一个强大的在线分析处理服务器。由于使用其他的OLAP服务器而为高昂的咨询费和培训......
Selecting bridging agents properly is a critical factor in designing non-damaging or low-damaging drill-in fluids. Histo......
