脱轨

Have many aspects , the progress of study of derailment problem is little.

由于空车脱轨机理十分复杂，而脱轨原因是多方面的，脱轨问题研究进展不大。

The classification of derailment accidents and the procedure of investigation on derailment accidents of freight car s are described.

介绍了脱轨事故的分类和货车车辆脱轨事故调查程序，并提出了事故调查过程中需要注意的几个问题。

The causes to derailment,overturning accidents of rolling stock are analyzed.

分析了铁道车辆脱轨、颠覆事故的原因，着重介绍了车辆脱轨、颠覆安全性的研究动向。

Based on the summarizing derailment theory , the ordinary program of accident inrestigation and handle and the accident inquiry of no-loaded train derailment, this paper has analysed and set forth the diversity of no-loaded train derailment problem and the complex of inquiry and handle combined with serai specific examples inwork, analysed stressly the reason of the train derailment accident on You-shui Bridge of Tiao-Liu Railway Line.

本文在综述脱轨理论和事故调查处理一般程序和空车脱轨事故调查的基础上，结合工作中几个具体实例分析阐述了空车脱轨问题的多样性和调查处理的复杂性，并着重分析了焦柳线酉水大桥上列车脱轨事故的原因。

Upline Upline are the people in your line of sponsorship.

脱轨脱轨的人，你们的下线。

The calculated results are corresponded to the real results, and the time history curves of vibration response of the system were obtained when the train derails.

摘 要：结合自动控制理论，研究了桥上列车脱轨的力学机理，发现桥上列车脱轨是列车-桥梁时变系统横向振动丧失稳定的结果。

Focusing on severe wheel flange/rail side wear and a series of derailments of tramway vehicles with independently rotating wheels, an investigation has been carried out by comparison against solid wheelsets. Based on MATLAB/SIMULINK and a self-developed simulation model considering the IRWs, derailments have been simulated with results of possible causes of such derailments. Efforts have been made to fulfill comprehensive treatment of controllable factors such as the wheel profile, lubrication, clearance between check rail and high rail etc.

针对目前具有独立轮转向架的低地板面轻轨列车所发生的脱轨问题和轮缘严重磨耗间题，从轮轨系统的基本关系出发，分析了传统刚性轮对与独立轮对的导向机理和特点，建立了具有独立轮特点的计算机仿真模型，采用MATLAB/SIMULINK仿真工具计算模拟了实际脱轨现象，并对各种可能导致脱轨和轮缘磨耗的因素进行了分析。

With the theory of energy random analysis of train derailment, the security of moving train on up line and down line of Laoluanhe bridges is analyzed contrastively, and the influence on improving resisting derailment ability of bridges by widening the distance between two main beams of the deck steel plate girder bridge is studied.

进一步运用列车脱轨能量随机分析理论，对比分析了老滦河桥上、下行线上的列车走行安全性，分析了增大钢板梁主梁中心距对提高桥梁抗脱轨能力的影响。

In china, presently we usually use derailment coefficient and reduction rate of wheel load to evaluate and analyze, but there is a limit.

研究车辆脱轨的内在机理，分析脱轨事故发生的确切原因，防止脱轨事故的再次发生，保证铁路运输安全是国内外铁路科技工作者一直追求的目标。

Through the reason analysis about one of the representative derailment accident,account for the reason,causing the derailment accident,is result of combine work of the wheel flange,grind and pile,and the wear of switch rail and base rail.

通过对某次典型货车脱轨事故的分析，说明引起车辆过道岔脱轨事故主要是由于车辆轮缘磨耗和碾堆，以及道岔尖轨和基本轮磨损联合作用的结果，因而提出建议要进一步完善车辆检修规章，以及完善和提高道岔处的钢轨磨耗限度标准的必要性和紧迫

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。