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Abstract: The boundary-value problem of an ultra-hyperbolic equation with an integral condition is studied and existence and uniqueness of the solution are proved.
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文摘:本文研究一类超双曲型方程的极限问题，提出并证明了具一积分条件的超双曲型方程的边值问题解的存在性和唯一性。 |
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Abstract: The calculation of bending force,is an important designing work in sheet metal.It influences the choosing of equipment tonnage,die material selection and the life span of a die.In the article,a method for calculating the sidepushing force acted
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文摘:弯曲力的计算在板料冲压中是一个重要的设计工作，影响着设备吨位、模具材料及其使用寿命，介绍了一种计算弯曲凸模所受侧推力的计算方法。 |
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Abstract: The cardinal principle and modes of automatic power shift for high horsepower tractor,as well as the structure of main sensor，the sensing technology and the intergrated electrohydraulic control technology are introduced.Some useful data have bee
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文摘:介绍了现代大功率拖拉机自动换挡控制系统的基本原理和方法，主要传感器的结构、传感技术及电液一体化控制技术，为现代大功率拖拉机自动换挡控制系统的设计提供了一些有用的资料。 |
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Abstract: The cast iron models of various graphite form were prepared by the way of directional solidification liquid-quenching.It was analyzed with the metallographical microscope,SEM and so on.The results show that the shape of the boundary and graphite
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文摘:用定向凝固液淬法制备了具有各种石墨形态的铸铁试样，借助于金相显微镜、SEM等对其进行了观察分析，发现界面推进速度对固液界面形貌及石墨形态均有影响，并考察了在界面推进速度相同的情况下，微量元素铈、硫对石墨形态的影响. |
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Abstract: The causation and scope of the flood were analyzed,the river stretch and investigation contents were described.The investigation result was analyzed.
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文摘:分析了产生呼玛河上游“88.8”洪水的暴雨成因和范围，阐述了洪水调查河段的选择和调查内容，侧重对洪水调查成果进行合理性分析。 |
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Abstract: The cause for blasting toes in open stope of Tiegukeng mine was analyzed, the corresponding modification measures were proposed and the blasting effect of the stope were improved.
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文摘:对铁古坑矿露天采场爆破产生根底的原因进行了分析研究,提出了相应的改进措施,使采场爆破效果得到了改善。 |
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Abstract: The character of electrode material is an important factor affecting and limiting the structure and property of batteries.Thereby,the main types and their features,fundamental properties,and preparation methods of the porous substrate materials
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文摘:简要介绍了电池用多孔金属电极基体材料的主要类型及其特点、基本性能要求和制备方法，旨在提供改善该材料制备工艺的线索和强化其性能及性能关系研究的必要。 |
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Abstract: The characteristcs of melt-spurt polypropylene fibre sieve-core was a nalyzed.The process condition of filtration and reverse-wash of sieve-core on base of experience was studied.
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文摘:分析了熔喷聚丙烯纤维滤芯的特点，并在实验基础上对其过滤与反洗的工作条件进行了初探。 |
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Abstract: The characteristics of quantum computing and the mechanism of immune evolution are analyzed and discussed.Inspired by the mechanism in which immune cell can gradually accomplish affinity maturation during the self-evolution process,a immune evol
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文摘:分析和探讨了量子计算的特点及免疫进化机制,并结合免疫系统的动力学模型和免疫细胞在自我进化中的亲和度成熟机理,提出了一种基于量子计算的免疫进化算法.该算法使用量子比特表达染色体,通过免疫克隆、记忆细胞产生和抗体相似性抑制等进化机制可最终找出最优解,它比传统的量子进化算法具有更好的种群多样性、更快的收敛速度和全局寻优能力.在此不仅从理论上证明了该算法的收敛,而且通过仿真实验表明了该算法的优越性. |
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Abstract: The characteristics of the eigenvalue problem of general viscoelastic structure are analyzed and its modal analysis method is put forward in this paper.
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文摘:分析了一般粘弹结构特征值问题的特点，建立了一般粘弹结构的模态分析方法。 |
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Abstract: The characteristics of the mechanism with an optimal structure and the basic principle of the design for the mechanism are discussed,and several design cases about a numerical control surface grinding machine for steam turbine cylinder are prese
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文摘:介绍了具有最优结构的机构特点及其设计的基本原则,并应用于汽轮机缸体数控随形磨削机的最优结构设计。 |
