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      diamond
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  金刚石
    The Study on Wear Regularity, Design and Performance Test of Diamond Bit and Diamond Saw
    金刚石钻头和金刚石锯片磨损机理、设计及性能测试研究
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    The Optimization Study of the Joint-thread of Diamond Wire-line Taking-coring Drill Pole
    金刚石绳索取心钻杆接头螺纹的优化研究
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    STUDY AND EXPERIMENT ON CORING SYSTEM YPK 36-Ⅰ FOR UNDERGROUND DIAMOND DRILLING
    坑内金刚石钻探用的YPK36-I型钻具的研究与试验
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    ON GENESIS OF DIAMOND OF VICTORY NO.1 PIPE,SHANDONG PROVINCE,CHINA
    山东胜利1号岩管金刚石的成因(摘要)
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    Metallurgical Quality of Diamond Impregnated Saw
    金刚石锯片的冶金质量
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  钻石
    The Most Interesting Aspects of Diamond in the World
    世界钻石之最
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    The Questions in Diamond Study
    钻石研究的几个问题
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    CHATHAM SYNTHETIC COLOURLESS DIAMOND──A mixed variety of Ⅱa~Ⅱb types
    查塔姆合成无色钻石──一种Ⅱa~Ⅱb混合型品种
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    MAJOR DIAMOND PRODUCTORS IN 21st CENTURY
    21世纪的几个主要钻石产地
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    New Methods to Estimate Pressure and Temperature of Diamond Source Region
    钻石源区温度、压力计算的新方法
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  “diamond”译为未确定词的双语例句
    The Study of Electroplated Diamond Bits and Their Application in China
    中国电镀金刚石钻头的研究与应用
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    Application and Improvement of Diamond Drilling Technology in Replacement Resources Exploration of Crisis Mines
    在我国危机矿山接替资源勘查工作中探矿工程新技术的应用
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    With the mathematics model of simple harmonic oscillator, we also studied the friction energy and its distribution between diamond bit and rocks. The distribution of friction energy between diamond bit and rocks is related with their elastic modulus(hardness), and the distributive law is as follows:Q 1∶Q 2=E 2∶E 1.
    通过谐振子模型研究摩擦热能的产生和分配 ,得出以下结论 :摩擦热能在钻头与岩石之间的分配 ,与其各自弹性模量 (硬度 )有关 ,热能的分配与其弹性模量成反比 ,即Q1∶Q2 =E2 ∶E1。
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    It is showed that the best volume distribution exponent (n) is 1.2,and the number of the coatings is 6.The axial tensile stress in functionally graded polycrystalline diamond compact is reduced from 986 MPa to 323 MPa compared with two layer polycrystalline diamond compact,and the shear stress is reduced from 722 MPa to 454 MPa.
    优化结果表明,分布指数最佳值为1.2,功能梯度层数为6层; 与普通双层结构聚晶金刚石复合片相比,轴向拉应力由986 MPa降到了323 MPa,剪应力由722 MPa降到454 MPa;
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    THE APPLICATION OF FOAM DIAMOND WIRE LINE DRILLING IN COAL-FIELD AND DISCUSSION OF SOME PROBLEMS
    煤田泡沫绳钻应用与问题探讨
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  diamond
       Through investigating the diamond-silicon grinding system, the grinding mechanism, including chip removal and subsurface damage, is discussed with the aid of the molecular dynamics (MD) approach and grinding experiments.
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       Ultra-precision ductile grinding of BK7 using super abrasive diamond wheel
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       Under optimised conditioning parameters, the super abrasive diamond wheel was well conditioned in terms of a minimized run-out error and flattened diamond grain surfaces of constant peripheral envelope.
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       Aggregation Stability of SiO2, FeOOH, ZrO2, CeO2, and Natural Diamond Sols and Their Binary Mixtures: 1.
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       The aggregation stability of SiO2 (aerosil OX-50), FeOOH, ZrO2 CeO2, and natural diamond sols was studied by photometry over a wide range of KCl and BaCl2 concentrations at pH 6 and 3.
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         The coring system YPK 36-I used widely at present in underground diamond drilling has advantages of reasonable structure, reliability and long life.This paper discusses specially following problems involved in coring systems: thread design and steadiness of steel and aluminium string of drill rods, structure principle of the swivel type double tube core barrels, inseparable head assembly, design speciality of ribbed core lifter case, and reasonability problem of the relation between the dimensions of ...
            目前在坑内金刚石岩心钻探中大量推广使用的YPK36-I型钻具,具有结构合理,性能可靠,寿命长等一系列优点。本文着重讨论了钻具所包括的钢、铝钻杆柱螺纹设计和强度问题,双层单动岩心管的结构原理,整体式异径接头,肋管式卡簧座的结构特点,以及我国36mm口径所用的内外岩心管规格及钻头规格匹配的合理性问题。本文还介绍了该钻具在使用中的情况及存在问题。为了适应坑道钻进日益发展的需要,提出了研制难取心的地层钻具、坑内不提取钻心钻具及薄壁管钻具的设想。
文摘来源
         In this paper a mechanical model of the functions of roof bolts is established in which the roof bolts not only bind the roof stratum but also work as flexible support points giving reaction to the rock roof of the mine roadways. On the basis of the theory that the "ply-plates " show a changeable rigidity and a small deflection, a comparative analysis can be conveniently carried out by using finite difference equations of the effects of different arrangement of roof bolt groups of the same spacing and the s...
            本文建立了煤矿板系岩层内锚杆的作用为既有组合顶板岩层的作用,又有给予顶板以反向力的柔性支承点作用的力学模型。利用组合板的变刚度小挠度弯曲理论,通过有限差分方法的数值计算,可以很方便地分析比较在同等锚杆密度和相同锚杆长度消耗量的情况下不同锚杆群的布置方式对于顶板支护效果的影响。通过计算,文章得出了菱形锚杆群布置优于方形布置、长短锚杆相间的布置方式比等长度锚杆的布置方式为好等的结论。
文摘来源
         On the average, footage drilled per month for each drill machine went up from 284 m in 1983 to 546 m by the end of August, 1987. Experiences for this achievement may be summarized as following: 1. proper arrangement of drilling in geological exploration; 2. making use of new techniques of synthetic diamond drilling; 3. quickening our step to renew the drilling equip merits; 4. strengthening the management of production and the research work of science and technology; 5. improving drilling operation sy...
            冶金地质系统岩心钻探台月效率由1983年的284米,提高到1987年(截止8月底统计)的546米。其主要经验是:摆正地质找矿与钻探的关系;发展人造金刚石钻探技术;更新钻探设备,加强生产管理和科研;改革施工制度;重视队伍建设。到1990年,钢粒钻进将被淘汰,绳索取心钻进将达到90%,台月效率预计将超过600米。建议重视微机在钻探管理中的应用;努力扩大钻探服务领域。
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