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machine
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  机械
    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
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    Application of programmable calculator in machine design design of v-belt drive for example
    可编程计算器在机械设计中的应用──附三角带传动设计计算
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    Developing MHJ-7EP Machine Oil
    MHJ-7EP机械油的研制及其应用
短句来源
    APPLICATION OF ANAEROBIC ADHESIVE TECHNOLOGY IN MACHINE DESIGN
    厌氧胶粘接技术在机械设计中的应用
短句来源
    WORKING OUT SOME PARAMETERS IN MACHINE DESIGN WITH FUZZY MATHEMATICS
    用模糊数学求机械设计中的一些参数
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  机床
    Research on Servo Control Techniques for Ultra-precision Machine
    超精密机床伺服控制技术研究
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    Research on Designing Theory and Method of Stewart-Platform Based Machine Tool
    基于stewart平台机构的并联机床设计理论及方法研究
短句来源
    Forward and Inverse Problems of Nonlinear Dynamics for Virtual Axis Machine Tool
    虚拟轴机床非线性动力学的正问题和逆问题
短句来源
    Study on the Methods of Precision Modeling and Error Compensation for Multi-Axis CNC Machine Tools
    多轴数控机床精度建模与误差补偿方法研究
短句来源
    Study on the Flexible Multibody Dynamics of the Virtual Axis Hybrid Polishing Machine Tool
    虚拟轴混联研抛机床多柔体动力学研究
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  设备
    Fair of the Welding New Machine and welding Equipment in the Chengdu
    焊接新设备和焊接器材展览会在成都隆重举行
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    Reforming and technology test of pray quenching system for 50/250Hz quenching machine
    50/250Hz双频淬火机喷淬设备改造及工艺试验
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    The development of the continuous casting machine
    连铸设备的概况与发展
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    CONFORM Continuous Extrusion and Cladding Machine
    CONFORM连续挤压包覆设备
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    Design and Research on CNC Machine for Special shaped Stone Working
    异形石材数控加工设备的设计与研究
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  “machine”译为未确定词的双语例句
    Study and Application of Some Key Techniques of High Accuracy and High Speed PCB NC Drilling Machine
    高精高速微孔PCB数控钻床关键技术的研究与应用
短句来源
    Dynamics Optimization Design on Parallel CNC Cutter Grinding Machine Tool
    并联数控刀具磨床的动力学优化设计
短句来源
    A Method of Experimental Research and Calculation on Grinding Machine Working Accuracy and Grinding Process Accuracy
    磨床工作精度与磨削加工精度的试验研究与分析计算方法
短句来源
    The Importance of the Structure of Mating Materials in the LFW-1 Friction and Wear Test Machine
    试件材料金相结构对LFW-1摩擦仪试验的重要性
短句来源
    The Investigation of the Dynamic Behaviour for the XKB2320A NC Planer Milling Machine
    XKB2320A型数控龙门铣床动态特性的试验研究
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  machine
The algorithm in this paper fully utilizes machine commands to accelerate the generation of lines and curves.
      
Exact bounds of the modified lpt algorithms applying to parallel machines scheduling with nonsimultaneous machine available time
      
In this paper, we consider Parallel Machines Scheduling with nonsimultaneous machine available time.
      
Single machine scheduling with controllable processing times and compression costs (part i: equal times and costs)
      
In this paper, authors consider a machine scheduling problem with controllable processing times.
      
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Low frequency damping in the process of plastic deformation of nickel containing various amount of carbon was measured on a small tensile testing machine. A series of internal friction peaks was observed on the internal friction-strain curve when the specimen contained a suitable amount of carbon. A study was made on the effect of heat treatment, previous cold-working, and temperature of measurement on this internal friction. It is suggested that the series of internal friction peaks is associated with...

Low frequency damping in the process of plastic deformation of nickel containing various amount of carbon was measured on a small tensile testing machine. A series of internal friction peaks was observed on the internal friction-strain curve when the specimen contained a suitable amount of carbon. A study was made on the effect of heat treatment, previous cold-working, and temperature of measurement on this internal friction. It is suggested that the series of internal friction peaks is associated with the alternate anchoring of dislocations by atmospheres of solute atoms and their subsequent escaping in the course of plastic deformation.

在小型拉力试验机上测量了含有不同碳量的镍在范性形变过程中的低频内耗,观察到当含碳量在某一适当范围以内时,内耗-应变曲线上出现了一系列的峯值。研究了不同热处理条件、预先冷加工以及测量温度对于这种内耗现象的影响。初步认为这一系列峯值是由于位错气团在形变过程中的更迭形成和解脱所引起的。

The experimental procedure for observing the low frequency anomalous internal friction peaks in Al-0.5% Cu alloy was systematically investigated in order to be able to obtain reproducible results. It is shown that, when the specimen is plastically deformed on a tensile testing machine to a suitable extent and then the internal friction measured in the course of aging at a suitable temperature, an aging internal friction peak exhibiting an anomalous amplitude effect may be observed. After the specimen has...

The experimental procedure for observing the low frequency anomalous internal friction peaks in Al-0.5% Cu alloy was systematically investigated in order to be able to obtain reproducible results. It is shown that, when the specimen is plastically deformed on a tensile testing machine to a suitable extent and then the internal friction measured in the course of aging at a suitable temperature, an aging internal friction peak exhibiting an anomalous amplitude effect may be observed. After the specimen has been "sufficiently" aged and its internal friction has reached a steady value, an amplitude internal friction peak at a given temperature can be observed when the strain amplitude for measuring internal friction is successively increased. Furthermore, when the internal friction of the "sufficiently" aged specimen is measured at higher temperatures with a given strain amplitude, a temperature internal friction peak exhibiting an anomalous amplitude effect may be observed. These experimental results demonstrated conclusively the existence of the previously observed amplitude internal friction peak at a given temperature and of the temperature internal friction peak exhibiting an anomalous amplitude effect.

用低频扭摆的方法,系统地研究了能够较有把握地观测到在Al-0.5%Cu合金中所出现的反常位错内耗的实验程序。结果指出,把试样在拉力试验机上预先拉伸到某一适当的形变量后,立即测量它在某一适当温度下时效的过程中的内耗,可以在内耗-时效时间曲线上观察到一个表现反常振幅效应(即内耗-振幅曲线上出现一个峯值)的时效内耗峯。用经过充分时效而内耗已经达到稳定值的试样,逐渐增加振幅,测量内耗,也可以观察到一个应变振幅内耗峯(当内耗表示为应变振幅的函数时)。此外,用一定的应变振幅在较高温度下,测量经过充分时效的试样的内耗时,也可以观察到一个表现反常振幅效应的温度内耗峯(当内耗表示为温度的函数时)。这些实验结果肯定地指出,在一定测量温度下的振幅内耗峯和表现反常振幅效应的温度内耗峯是存在的。 为了找出以前在Al-0.5%Cu中所观察到的反常内耗现象重复性不好的原因,系统地研究了测量内耗所用的应变振幅对于出现振幅内耗峯的影响以及预形变量对于出现时效内耗峯和温度内耗峯的影响。对于出现反常内耗现象的实验条件进行了分析。 所观察到的关于反常内耗现象的实验结果,都可用位错拖着溶质原子气团运动的模型来作定性的解释。具体的模型和理论分析将另行报...

用低频扭摆的方法,系统地研究了能够较有把握地观测到在Al-0.5%Cu合金中所出现的反常位错内耗的实验程序。结果指出,把试样在拉力试验机上预先拉伸到某一适当的形变量后,立即测量它在某一适当温度下时效的过程中的内耗,可以在内耗-时效时间曲线上观察到一个表现反常振幅效应(即内耗-振幅曲线上出现一个峯值)的时效内耗峯。用经过充分时效而内耗已经达到稳定值的试样,逐渐增加振幅,测量内耗,也可以观察到一个应变振幅内耗峯(当内耗表示为应变振幅的函数时)。此外,用一定的应变振幅在较高温度下,测量经过充分时效的试样的内耗时,也可以观察到一个表现反常振幅效应的温度内耗峯(当内耗表示为温度的函数时)。这些实验结果肯定地指出,在一定测量温度下的振幅内耗峯和表现反常振幅效应的温度内耗峯是存在的。 为了找出以前在Al-0.5%Cu中所观察到的反常内耗现象重复性不好的原因,系统地研究了测量内耗所用的应变振幅对于出现振幅内耗峯的影响以及预形变量对于出现时效内耗峯和温度内耗峯的影响。对于出现反常内耗现象的实验条件进行了分析。 所观察到的关于反常内耗现象的实验结果,都可用位错拖着溶质原子气团运动的模型来作定性的解释。具体的模型和理论分析将另行报导。

It would he more exepedient for improving the production quality and designof the grinding machines as well as the production of precision macbinery andinstruments, providing certain testing and analytic method for grinding machineworking accuracy and grinding process accuracy could be stipulated in a scientificand general way. This paper describes the application of successive point diagram methed,in which different kinds of constituents are consecutively separated from thecombined production error. Systematic...

It would he more exepedient for improving the production quality and designof the grinding machines as well as the production of precision macbinery andinstruments, providing certain testing and analytic method for grinding machineworking accuracy and grinding process accuracy could be stipulated in a scientificand general way. This paper describes the application of successive point diagram methed,in which different kinds of constituents are consecutively separated from thecombined production error. Systematic errors are decomposed into constant, succes-sively increasing or decreasing, and periodical parts, and their values are calculated.The paper also relates the application of oorrelation method for decomposing andproportioning the random errors into the error due to blank's reproduction or theerror of the machine tool or the machining operation itself, thus enabling us tolocate the source of errors occured in the process of operation and to work outeffective measares of improvement.

对磨床工作精度和磨削加工精度规定一种比较科学的统一的试验和分析方法,势将有利于磨床制造质量的提高、结构设计的改进、以及精密机械和仪器的生产。本文阐述了应用点图分析法,从综合的加工误差中将各种不同性质的组成误差逐层分解:将系统性误差分解为常值的、递增或递减的、周期的成分,并定出其大小;应用相关分析法又将随机性误差分解为坯件复映的、机床或加工工序本身固有的,并定出其比重。这样就便于按图索骥,找出机床在工作过程中产生误差的相应原因,从而对症下药,提出有效的改进措施。

 
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