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structure     
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  结构
    Systemically Study of Electronic Structure and Properties for Ti-Al Alloys
    Ti-Al合金电子结构和性能的系统研究
短句来源
    Study on Fatigue Reliability of Metal Structure System of Engineering Machine
    工程机械金属结构系统疲劳可靠性分析研究
短句来源
    Phase Structure of Al-Cu-Fe Alloys and Kinetics Study on the Solidifications of Al-Cu-Fe Primary Icosahedral Quasicrystals
    Al-Cu-Fe系合金相结构及初生准晶凝固动力学的研究
短句来源
    The Phase Structure and Electrochemical Properties of La-Mg-Ni Based AB_3-type Hydrogen Storage Electrode Alloys
    La-Mg-Ni系AB_3型贮氢电极合金的相结构与电化学性能
短句来源
    An Investigation on the Phase Structure and Electrochemical Properties of the La-Mg-Ni-Co-based Hydrogen Storage Electrode Alloys
    La-Mg-Ni-Co系贮氢电极合金的相结构及电化学性能研究
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  组织
    Study of Structure Refinement and Optimization of Mechanical Proprieties for Superalloy K4169
    K4169高温合金组织细化及性能优化研究
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    Study of Technique Optimization and Structure Property of Electromagnetic Continuous Casting
    电磁连续铸造过程工艺优化及组织性能研究
短句来源
    Numerical Simulation of Solidification Structure Formation of TiAl Alloy Ingots
    TiAl合金锭凝固组织形成的数值模拟
短句来源
    THE FORMATION OF GRANULAR STRUCTURE IN A HIGH-STRENGTH LOW-ALLOY C-Mn STEEL CONTAINING V AND Ti
    含钒钛低合金高强度碳锰钢中粒状组织的形成
短句来源
    THE STUDY OF EFFECTS OF ANTIMONY AND RAREEARTH ELEMENTS ON THE STRUCTURE AND FRACTURE TOUGHNESS K_(IC) OF ZL104 Al-Si ALLOY CASTINGS
    锑和稀土元素对ZL104合金的组织及K_(IC)影响的研究
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  体系结构
    The Structure of the JGAPT NC Auto—Programming System
    JGAPT数控自动编程系统的体系结构
短句来源
    Study and development on forging machine CNC structure
    锻压设备数控系统体系结构的研究和发展过程
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    The system structure of CNC memory
    CNC存储器的体系结构
短句来源
    The Study of the Structure of the Intelligent Grinding Machining
    智能磨削加工的体系结构研究
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    System Structure,Knowledge Expression and Reasoning Strategy in Agile Fixture Configuration Design System
    敏捷夹具构型设计系统的体系结构、知识表达与推理策略
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  组织结构
    Structure and Behavior of Mo and Mo-N Surface Modification Layers on Ti6A14V Alloy by Double Glow Plasma Surface Alloying Technique
    Ti6A14V合金表面双层辉光离子渗Mo及Mo-N共渗改性层的组织结构及性能研究
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    Structure and Properties of Ni-P-Diamond Electroless Composite Coating
    Ni-P-金刚石化学复合镀镀层的组织结构与性能
短句来源
    EFFECTS OF IONITRIDING ON STRUCTURE OF NITRIDED LAYER AND SUBSTRATE TO Ti AND Ti-6A1-4V ALLOY
    离子氮化对Ti和Ti-6Al-4V合金氮化层和基体组织结构的影响
短句来源
    The Effect of Structure of Electroless Deposited Nickel-Phosphorus Alloy Coating on Wear Resistance
    组织结构对化学沉积镍磷合金层耐磨性的影响
短句来源
    The Structure and Wear Resistance of Boronized Layer of Stainless Steel 2Crl3
    2Cr13钢渗硼层的组织结构与耐磨性
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      structure
    The paper studies generic commutative and anticommutative algebras of a fixed dimension, their invariants, covariants and algebraic properties (e.g., the structure of subalgebras).
          
    In the case of 4-dimensional anticommutative algebras a construction is given that links the associated cubic surface and the 27 lines on it with the structure of subalgebras of the algebra.
          
    We study the multiplicative structure of rings of coinvariants for finite groups.
          
    Fibonacci manifolds have a hyperbolic structure which may be defined via Fibonacci numbers.
          
    In this paper we prove that the homogeneous spaceG/K has a structure of a globally symmetric space for every choice ofG andK, especially forG being compact.
          
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    Further study of the effect of micro-structure of the sample electrode on the spectrochemical analysis of steels revealed that the effect on the analysis of W, Si and Ni all increases with the increase of the carbon content and for different analysis line pairs chosen, the effect not only differs in magnitude but also can be different in direction as was observed in the case of Cr in chromium steels. The effect on the analysis of Mn in all the steel samples studied is not significant. Structure effects...

    Further study of the effect of micro-structure of the sample electrode on the spectrochemical analysis of steels revealed that the effect on the analysis of W, Si and Ni all increases with the increase of the carbon content and for different analysis line pairs chosen, the effect not only differs in magnitude but also can be different in direction as was observed in the case of Cr in chromium steels. The effect on the analysis of Mn in all the steel samples studied is not significant. Structure effects observed under different excitation conditions show that under the same excitation condition, the arc temperature which is indicated by the log intensity ratio of two iron lines of different excitation potential is higher when the sample electrode is of annealed structure; and in light sources of the same arc temperature the relative concentration of alloying elements to iron is higher when the sample electrode is of quenched structure. Since these two factors have opposite effect on spectral line intensities, the result of analysis will be different for different line pairs chosen. If the analysis line pair is homologous, the effect observed is due to a difference of relative concentration of different elements in the arc column alone, and the result of analysis is always higher when the sample electrode is of quenched structure. This may he explained by the fact that the presence of carbon in solid solutions decreases the interatomic forces or shows a lowering of energy of volatilization. This lowering is different for different elements but all increases with the increase of carbon content.

    在过去工作的基础上,进一步观察了合金钢的组织结构对于钨、镍、硅、锰的光谱分析的影响和碳钢的组织结构对于硅、锰的影响。这些影响都是随着钢中含碳量的增加而增加,对与不同元素有程度上的不同。改变激发条件的试验结果指出:1)在同一激发条件下,淬火组织试样的弧温比退火组织的低;2)在同一弧温时,弧柱中合金元素与铁元素的浓度比值是淬火组织的比退火组织的高。由于这两个因素对于谱线强度所发生的影响的方向相反,所以在实际的光谱分析中,组织结构的影响便有不同的表现。 根据分析线对中的分析线与内标线的激发能差值的大小,可以说明为什么采用离子线或原子线作分析线对时所观察到的组织结构影响不同或者方向相反。当所用的分析线对比较均称时,淬火组织试样的分析结果总是比退火的高。引起组织结构影响的主要原因是由于在不同组织结构时蒸发情况的不同。试样中所含溶解碳量的增加使原子间力相应地减小,这可以解释为什么含碳量不同以及不同的合金元素引起不同的组织结构影响。

    The formation of Widmanst(a|¨)tten structure of alpha iron in hypoeutectoidsteels was investigated in 0.27,0.40,0.52 and 0.60% carbon steels.Specimenswere heated to 860° and 1240℃ in vacuo and cooled at different rates to roomtemperature or isothermally treated at various temperatures between 650° and750℃ in vacuo.It was shown that the Widmanst(a|¨)tten structure of alpha ironproduced in 0.27,0.40 and 0.52% carbon steels was always accompanied by asurface relief of the type associated with bainite...

    The formation of Widmanst(a|¨)tten structure of alpha iron in hypoeutectoidsteels was investigated in 0.27,0.40,0.52 and 0.60% carbon steels.Specimenswere heated to 860° and 1240℃ in vacuo and cooled at different rates to roomtemperature or isothermally treated at various temperatures between 650° and750℃ in vacuo.It was shown that the Widmanst(a|¨)tten structure of alpha ironproduced in 0.27,0.40 and 0.52% carbon steels was always accompanied by asurface relief of the type associated with bainite transformation.The surfacerelief was not observed when conditions were not favourable for the productionof Widmanst(a|¨)tten structure.The effects of various factors on the formation of Widmanst(a|¨)tten structure ofalpha iron are discussed.It is suggested that the absence of Widmanst(a|¨)ttenstructure in slowly cooled specimens,and in specimens with fine austenitic grains,is due to the formation of grain boundary ferrite,which enriches the remainingaustenite with carbon,thereby prevents the formation of carbon-free bainite.The experimental results showed that austenite may decompose by bainitetransformation at temperatures as high as 750℃.

    试验证明亚共析钢中魏氏组织的α铁系以贝茵体型相变的机构形成,相当于无碳贝茵体。奥氏体晶粒尺度、碳含量、温度以及冷却速度对魏氏组织的影响都很容易根据贝茵体形成机构的理论加以解释。

    In order to simplify the preparation of standards and to reduce the effects of micro-structure and physical state of samples in the spectrochemical analysis of alloy steels, universal methodg are developed in this laboratory. For the solution method, steel samples dissolved in acid and dropped on the flat tip of carbon electrodes are excited in a spark source. For the powder method, oxides prepared from the steel samples are put in cavities of carbon electrodes and excited in an a. c. are. Experiments...

    In order to simplify the preparation of standards and to reduce the effects of micro-structure and physical state of samples in the spectrochemical analysis of alloy steels, universal methodg are developed in this laboratory. For the solution method, steel samples dissolved in acid and dropped on the flat tip of carbon electrodes are excited in a spark source. For the powder method, oxides prepared from the steel samples are put in cavities of carbon electrodes and excited in an a. c. are. Experiments show that these procedures give satisfactory analytical results.

    本文介绍利用溶液法和粉末法进行合金钢光谱分析的方法,以克服制备标准样品的困难和消除样品组织结构和物理状态的影响。将钢样溶解于酸制成的溶液,滴在平头碳电极上用火花激发,或将钢样制成氧化物粉末,填于碳孔中,用交流电弧激发。初步结果指出,这些方法可以满足一般分析要求。

     
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