排序方式： 共有189条查询结果，搜索用时 31 毫秒
61.
交通强国铁路先行的大背景下,我国轨道交通行业技术和产业发展迅速,国家对轨道交通专业技术人才的需求日益突出.工科人才培养中,实践教学是培养卓越工程人才的重要环节.将学科优势和行业特点融入到实践教学体系中,整合最新科研成果及校内外实践教学资源,可以有效促进学生专业创新能力、工程实践能力和技术融合能力的提升.本文以西南交通大... 相似文献
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城市轨道交通建设对城市环境的影响分析 总被引：2，自引：0，他引：2
城市轨道交通是改善城市交通拥堵状况的主导客运方式之一.文章以NJ城市轨道交通为例,定性定量地综合评价和分析了城市轨道交通建设运营对城市环境的正面和负面影响,阐明了城市轨道交通对该地区生态环境和城市环境的改善具有明显的积极作用. 相似文献
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本文通过对电梯现行结构的研究,在满足安全运行的前提下提出了用导向索替代目前的电梯导轨的新方法,该方法在别墅电梯、特殊电梯、杂物梯和施工升降机的设计中有广泛的推广价值,从而拓宽了旧楼增装设电梯的途径。 相似文献
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A system for measuring the quality parameters of elevator guide rails is developed. The quality parameters the system can measure include straightness, flatness, squareness, width and height of the rail. The system consists of six parts:main guideway, auxiliary guideway, reference rail, saddle, control casing and measured rail. The guide rail to be measured is mounted on a bed. The straightness errors of surfaces are checked by five linear displacement sensors mounted on the saddle. The deviation of readings from the sensor, which is in contact with top guiding surface, gives the straightness error of the surface and height of the rail. The other four sensors are used to measure side guiding surfaces respectively and give other parameters including flatness on the surfaces, squareness, width and height of the rail. A novel calibration method is also developed to calibrate the straightness motion error of the system in horizontal and vertical directions. The deflection deformation of the measured rail is fitted by using a fourth-order polynomial. Experimental results show that the uncertainty of the system on the side surfaces after compensating the straightness motion error is less than 0. 01 mm, and the uncertainty of the system on the top surface after compensating the straightness motion error and the deflection deformation of the rail is less than 0.03 mm. 相似文献
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以城轨车辆系统检测技术的课程教学为例,研究了科研实践对学生学习城轨车辆检测技术的促进作用以及教师从事科研实践对城轨车辆检测技术教学的重要性。一方面,科研不仅是将枯燥无味的理论知识形象生动化,而且能培养学生的基本科学素养,激发他们的求知欲望;另一方面,教师从事科研工作使教师适应当前创新教育形式下的教学发展,实现教学的改革创新。通过主动从事科研实践,将新理论、新方法渗透到城轨车辆检测技术的教学实践中,逐步形成具有自身特色的教学方法和模式。 相似文献
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WANG Yan-lei HAO Qing-duo OU Jin-ping 《重庆大学学报(英文版)》2007,6(3):221-226
In-plane shear properties of composite material laminates are very important in structural design of composite material. Four commonly used in-plane shear test methods were introduced in this paper. In order to study the differences of various shear test methods, two ASTM standard in-plane shear test methods for composite material laminates were experimentally investigated. They are ±45° tensile shear test (ASTM D3518) and V-notched rail shear test (ASTM D7078). Five types of composite material laminates composed of E-glass fiber fabric and vinyl ester resin were utilized, whose stacking sequences are 03s, 0/903s, CSM/0/902s, ±453s and (0/90)2/(±45)2/(0/90)2s, respectively. The test results indicate that the ±45° tensile shear test can predict shear moduli of composite material laminates accurately. However, the predictions of shear strength using ±45° tensile shear test are significantly lower than those of V-notched rail shear test. 相似文献
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Liu Hongyun 《石家庄铁路工程职业技术学院学报》2007,(2)
对钢轨市场前景和现行贸易模式进行简要分析,探讨钢轨代理服务商构建内外部管理信息系统的方式、模块构成、功能发挥及相关管理制度,总结钢轨代理服务商应用供应链管理理念,信息技术,构建内外信息平台,有效提高服务质量和水平,降低经营成本,提高企业核心竞争力。 相似文献
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张宇 《郧阳师范高等专科学校学报》2000,(2)
“栏杆”一词从汉朝出现到在宋词中多次出现 ,逐渐成为中国古代文化中的特定词语。在宋词中 ,凭栏的心情大致有以下几种 :闺怨、伤春、忆旧、思乡、伤别、抒愤和怀古。栏杆意象的出现与我国古代登高的习俗和宋人独特的环境有关。反映了宋人不同阶段的不同心态 相似文献
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论文在城市轨道交通类人才培养的需求基础上,结合习近平同志提出的新时代中国特色社会主义人才培养的要求,提出了城市轨道交通类课程融入思政元素的教学方案探讨。课程思政实施过程中引入了立德树人、工匠精神、职业道德等思政元素,并提出了课程思政融入城市轨道交通类课程的方式与方法,对课程思政在全国范围内的进一步推进具有积极的意义。 相似文献