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结合在污水处理过程监测系统应用软件设计中的应用 ,介绍了用VB在工业生产中开发应用软件的方法 ,重点介绍了利用VB在开发组态应用软件 ,开发实时数据库中的应用 ,并介绍了系统的组成及主要的功能模块 相似文献
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基于线控转向的汽车转向系统技术研究 总被引:2,自引:0,他引:2
线控转向(Steering-By-Wire)是汽车转向系统发展中最新的技术.介绍了汽车转向系统的发展趋势和线控转向技术发展中应用的关键技术,总结了其性能特点以及现阶段开发应用中的主要问题,分析了汽车线控转向系统的结构及工作原理,指出了线控转向系统的优点和应用前景,展望了其研究发展趋势. 相似文献
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针对桥涵水文计算的复杂性和繁琐性以及手工计算效率和准确性较低的问题,开发了山东省公路工程水文设计系统,确立了系统的功能、框架组成。采用Visual Basic 6.0进行系统的开发,将流量影响线法作为流量分析的主要功能,把雨量当作移动荷载在流量影响线上加载,计算出流量历程曲线,据此确定出最大洪峰流量和到达桥址处的时间。经过实际工程的检验,系统可以有效地减少手工计算的复杂和繁琐,大大提高设计效率和准确性。 相似文献
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文章以目前地铁建设中常用的土压平衡盾构为背景,介绍了盾构故障诊断及保养系统的总体结构方案、知识库知识的获取建立、推理机的设计及系统的主要工作流程等,旨在通过系统的研制与开发,提高盾构掘进机的施工效率. 相似文献
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以适应山东省交通运输服务社会发展需求为基础,主要选取公路运输服务社会公共满意度作为研究对象,构建并改进了山东省公路交通服务社会满意度测评(HCSI)模型,对结果进行了四分图分析和结构方程模型分析,最后进行社会满意度评价系统的设计开发。 相似文献
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文章通过对主要类型锂离子电池技术指标和特性进行梳理,研究了锂离子电池的热管理技术、安全性、火灾消防技术等应用重点环节的技术要点,分析了锂电池在船舶动力系统中的作用及全电池动力系统和混合动力系统的技术特点,为应用锂电池的新能源船舶研发提供参考。最后介绍了目前国内外应用储能电池动力船舶的多个典型案例,简要阐述了各个案例中的船舶核心参数和主要特点,总结了当前电池动力船舶的主要应用船型、锂电池类型、应用市场及政策、规范现状,认为锂电池动力船舶的发展前景光明,但在相关政策和船舶规范研究方面尚需进一步完善。 相似文献
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The public transport system of Karlsruhe, in particular its innovative services on jointly used heavy rail lines, has received substantial attention throughout the past 20 years. The discussion of the system and of its development has been rather limited in the past, mostly highlighting technical aspects. This paper provides an overview of the development, including the urban development, of the region and of the funding system. The ridership and financial development of the operator is documented in detail. Three case studies focus on the integration of the system development in the general political process of the region and demonstrate the limitations of the operator under its current ownership structures. 相似文献
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《Transportation Research Part A: Policy and Practice》2003,37(5):453-478
The ancient Romans built an excellent system of roads, the development of which required systematic planning, creative design and high-quality construction and maintenance capabilities. At the empire’s peak about 85,000 km (53,000 miles) of road connected the capital Rome with its far-away frontiers. Twenty-nine major public roads radiated from Rome, the most famous of which was Via Appia (The Appian Way), also called the “queen of roads”. Built in 312 BC, it is the most illustrious example of Roman civil engineering skills; small sections of it are still in use today. What were the major reasons underlying this (and similar) massive and costly undertakings? How was it constructed so as to last for so many centuries? How much real resources were invested in its construction and what were the principal benefits? These are the main questions that this study aims to examine. 相似文献
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文章以新世纪大桥主桥钢桁架上构施工为例,对施工所需缆索吊装系统的承重主索、塔架、地锚、扣挂体系进行了介绍,并阐述了利用缆索吊装系统进行钢桁架拱桥上构施工的工艺流程及技术要点。 相似文献
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Consumers can only see a vogue sight of China bus & coach industry.Although it has became the largest manufacturing center in theworld,most main indicators of automotive type are still kept at the level of the last century and its commercial value remains low.As Automobiles are invented more than 100 years ago in Europe and used in public transportation.They became main ways of transportation in human life because of large production in flow line in America.The advantages of private cars lie in its freedom and convenience as well as traveling comfort;traveling by bus&coach is increasingly attractive as the rapid development of road 相似文献