排序方式： 共有78条查询结果，搜索用时 296 毫秒
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LUO Wei ZHANG Pan 《船舶与海洋工程学报》2007,6(4):44-47
A new type of self-propelled barge was designed specifically for use on the Chishui River. This paper presents experimental results of its performance from tests in water of different depths,while bearing different loads. For test purposes,one of the best self-propelled barges from the Chishui River was used as a performance reference. The comparison showed that the new design has better maneuvering performance. 相似文献
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An S-naproxen（S-NAP）molecularly imprinted monolithic stationary phase（MIMSP）with specific recognition for S-NAP and naproxen（NAP）was prepared by in situ technique,utilizing 4-vinylpridine（4-VP）as a function monomer,ethylene glycol dimethacrylate（EDMA）as a 相似文献
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京山桥钢箱梁顶推施工技术 总被引：2，自引：1，他引：1
天津开发区京山桥钢箱梁部分施工需跨越铁路,经反复研究采用兜尾式顶推法施工,能在较短的时间将钢箱梁架设到位,可以确保铁路运输安全,技术可行。详细介绍钢箱梁顶推施工技术,包括钢箱梁拼装平台搭设、龙门吊安装、钢箱梁拼装、顶推设备安装、顶推到位、落梁等技术。 相似文献
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JIANG Tao LI Qing-fen LI Ming FU Wei. Power Generation Department Luneng Company Jinan China. College of Mechanical Electrical Engineering Harbin Engineering University Harbin China. Technique Superintendence Center Daqing Oil Field Company Ltd Daqing China 《船舶与海洋工程学报》2002,1(2):66-71
A knowledge-based system in structural component design based on fracture mechanics is developed in this paper. The system consists of several functional parts; a general inference engine, a set of knowledge bases and data-bases, an interpretation engine, a bases administration system and the interface. It can simulate a human expert to make analysis and design scheme mainly for four kinds of typical structural components widely used in shipbuilding industry: pressure vessels, huge rotation constructions , pump-rod and welded structures. It is an open system which may be broadened and perfected to cover a wider range of engineering application through the modification and enlargement of knowledge bases and data-bases. It has a natural and friendly interface that may be easily operated. An on-line help service is also provided. 相似文献
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通过建立直流牵引回流钢轨电位的等效模型,分析其基本特征及影响因素,某一点的钢轨电位呈现明显的交变特性。合理设置直流牵引供电系统网络参数和优化列车运行图以调整列车电流的时空分布,是控制钢轨电位的有效措施。结合现行规范分析钢轨电位设计标准在执行中的困惑,提出钢轨电位的评价应以确保电压作用人体安全为基本出发点,体现电压幅值及其时间持续效应,不应仅规定峰值电压。 相似文献
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Lang Zhou Xiuqin Wei Zhangmin Deng School of Chemistry Materials Science Nanchang University Nanchang P.R. China 《上海交通大学学报(英文版)》2000,(1)
IntroductionPreopationofultrideslikeAIN,Cffe,VN,TNandNbNplmpakeyroleinschceStrengtforngofalloysteelsbynitrdation.TheprocessisbasicallyillternaldridationofallOyscOmPosedofbasematalslikeFeandreactiveelemedslikeAl,UndecolltrOlledenvirondtoprevIttfonnndonofsdsescaleofbasemetalnitrdes,resemblinginternaloxidationofsimilartweofalloys[l].NUmericalmassttansferanalysisofnitridationkineticshasbeenwellestablished['],howeycfthefactthatthcyneglectinforactionofninogeneddride-formingatomsPreventsitfro… 相似文献
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Audi公司以全新的整机结构方案开发出了新一代V8-TDI增压直喷式柴油机,采用可调式增压系统,并在V形夹角中组合了1个电动压气机。开发的目标是得到1款运动型V-TDI机型,在燃油耗、功率和扭矩方面要明显有别于Audi V8-TDI柴油机,是1种能广泛用于高档车型中的动态特性优异的动力装置。所应用的重要部件是带有电动压气机的可调式增压系统和近发动机单流道废气后处理系统。 相似文献
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SUN Li-ping NIE Wu ZHANG Wei 《船舶与海洋工程学报》2006,5(1):1-5
1Introduction Therearethreefamiliarmethodstocalculatedynamic characteristicsofconventionalshipstructures:energy method,transfermatrixmethodandfiniteelement method.Forenergymethodanapproximatelyvibration deflectionfunctionmustbeassumed.Soitisalmostim possi… 相似文献