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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。 |
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Abstract: The characteristics of wavelet transform and its significance in image edge extraction are presented.The detailed steps for the extended target centroid calculation with wavelet transform are described.Extracting target(airplane) centroid coordi
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文摘:介绍了小波变换的特点及其在图象边缘提取中的意义,说明了扩展目标用小波变换进行目标形心计算的详细步骤,并以飞机图象为目标在不同图象模糊程度及背景噪音情况下用小波变换进行了目标形心坐标提取,比较了不同图象模糊程度及背景噪音情况下目标形心坐标提取的精度,展示了小波变换在扩展目标跟踪技术中应用的前景。 |
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Abstract: The chemical kinetic parameters of single-base p ropellant are determinated using microcalorimetry and the experimental condition s are studied.The results obtained are very imporant for the study of the decomp osition mechanism and sefety of gu
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文摘:用微热量热法系统测试了单基发射药的动力学参数，摸索了测试条件，其测定结果对今后发射药分解机理和安全性研究具有一定的参考价值。 |
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Abstract: The chromium leaching-out toxicity was determined with different extraction agents,different extracting time,different solid-liquid rate and different extracting method.In accordance with petroleum drilling engineering and protecting environment
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文摘:以铬为分析指标，探讨了钻井废弃泥浆在不同的提取剂、不同的提取时间、不同的固液比以及不同的提取方式下铬的浸出毒性大小，提出了适合评价钻井废弃泥浆中铬的浸出毒性的试验方法。 |
