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Abstract: In this paper,a kind of technological scheme for one-step precision forging spur gear with large module is put forward by using positive friction role.Experiment,in which commercial pure lead is taken as test material,is done in the special die
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文摘:针对大模数直齿圆柱齿轮，提出了利用积极摩擦一步成形的工艺方案，并用工业纯铅作为试验材料，在设计的专用模具上进行试验，记录了力——行程曲线，结果表明：利用积极摩擦作用能够有效地保证直齿圆柱齿轮精锻时齿腔充满，但同时增加了变形力。 |
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Abstract: In this paper,a residual stress on cemented carbide inserts caused b y grinding of diamond and electrical grinding of diamond,and its effect on cemented carbide strength are studied.
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文摘:研究了在金刚石刃磨和电金刚石刃磨时硬质合金刀片上引起的残余应力,及其对硬质合金强度的影响。 |
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Abstract: In this paper,a rigid plastic dynamicequations of the stucture subjected to impact by a rigid projectile areobtainedbased on the minimum principle in dynamics ofelastic-plastic continua with finite deformation.It is shown that the method is reli
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文摘:应用有限变形的最小加速度原理，推导出了小变形或有限变形构件受到刚性飞射物撞击时的刚塑性运动方程，指出该方法具有直接、简捷和可靠的特点. |
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Abstract: In this paper,a trimming method for subdivision surface is presented.It is applied well in the CAD/CAE system of plastic injection molding,and also useful for other designing of products and field of FEM analysis.Experimental results show that t
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文摘:介绍一种基于离散曲面的裁剪算法，该算法适用于注塑模CAD/CAE或其它产品设计和有限元分析的领域，实践证明该算法自动化程度高、速度快、稳定可靠. |
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Abstract: In this paper,a type of kilomega bps chips group for ether net which surpasses the standards by large abundance is presented.
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文摘:介绍了一种性能超越规范很宽裕量的千兆位以太网芯片组。 |
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Abstract: In this paper,a variety of encryption methods for optical image security are comparatively studied.According to the different method,the encrypted image can be transformed into white or color noise.The encryption phase can be the random phase or
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文摘:本文分析比较了多种实现光学图象相位加密的方法，发现不同方法获得的加密图象有不同类型的噪音分布.无论加密相位是随机相位模板、浑沌序列的相位列阵，还是用相位重构迭代算法计算的结果，它们都能起到加密图象的功能.解密图象的质量或被相关识别的能力与解密过程中所使用正确解密相位的不同部分以及高低频分量多少有关，且其依赖程度是由不同的加密方法自身决定. |
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Abstract: In this paper,an achievement on water-soluble cores of aluminabase suitable for gray-iron casting is reported.
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文摘:本文报导了一种可用于铸铁件生产的刚玉基水溶性型芯的研究成果。 |
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Abstract: In this paper,an orthogonal multicode wideband CDMA system modelincluding pilot channel based on chaos spreading sequences is given.Based on chaos sequences,with pilot channel inserted orthogonally,it is shown that the performance of the system
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文摘:提出一种基于混沌序列含导频信号的宽带正交多码CDMA系统模型，利用混沌序列以及采用正交插入导频信号提高系统性能，并对此模型在衰落信道中的性能进行分析。 |
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Abstract: In this paper,both the biological characters,ecological distribution,value of ornament and medicine,and the ways of the development and utilization of the wild herbaceous medical flowers and plants from Laoshan mountain were studied and discusse
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文摘:研究了青岛崂山野生草本药用花卉的生物学特征、生态分布、观赏及药用价值，讨论了它们的开发利用途径，以期为青岛崂山野生草本药用花卉的合理开发和持续利用提供可靠、详实的依据。 |
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Abstract: In this paper,by analyzing the key circuits of electronical rectification in an energy-saving lamp, the choie and design of power-switch transistor for energy-saring lamp and electronical rectification are put forward.
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文摘:本文通过对节能灯中电子镇流器关键线路的分析，介绍了节能灯电子镇流器用功率开关晶体管的选择和设计思路。 |
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Abstract: In this paper,conception of intelligect building and the constructive proposition are described ,application and fast development of several new techniques in intelligent building are descried in detail.
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文摘:本文简单论述智能建筑的概念和智能建筑的建设构想，并着重论述几种新技术在智能建筑中的应用及其发展。 |
