1.In accordance with the driving characteristics of AC driving locomotive,the working status of its traction transformer is analysed.The questions that should be considered in the traction transformer design of AC driving locomotive are mentioned.These questions are the large short-circuit impedance of traction winding,higher harmonic current,over-excitation and DC magnetization caused by large variation of the network voltage,etc.Some disposal methods are given.
针对交流传动电力机车的传动特点，对其中的牵引变压器的工作状态进行了分析，指出交流传动电力机车用牵引变压器设计时需考虑的牵引绕组的短路阻抗大、电流的高次谐波、网压波动大可能引起的过励磁以及直流磁化等问题，同时给出了相应的一些解决方法。
2.The influence of secondary suspension distribution,wheel wearing,coupler height,primary and secondary vertical suspension stiffness,traction height of per bogie,distance from suspension point of traction motor to centerline of axle,between centers of two bogies and wheelbase on adhesion availability of B0-B0-B0 axle hung locomotive is analyzed.
就B0-B0-B0轴悬式机车二系簧分布,车轮踏面磨耗,车钩高度,一、二系垂向刚度,端、中转向架牵引点高度,电机吊挂点到车轴中心的距离,转向架中心距,轴距等对机车黏着利用率的影响进行分析。
3.Methods 68 cases with mandible fracture were treated with the rigid internal fixation by the small clamping plank under the intermaxillay elastic traction. After operation, the elastic traction hat braking skull and jaw replaced the tooth bow clamping plank.
方法68例下颌骨骨折患者全部采用颌间弹性牵引下小夹板坚固内固定治疗,术后去除牵引圈及上颌牙弓夹板,改用弹性牵引帽颅颌制动。
4.The basic circuit principle of AC drive traction converters is introduced, whose technical characteristics and development process are also described in details combinating the main parameters of traction converters for AC drive locomotives, such as DJ electric locomotive, NJ1 diesel locomotive and DWA metro engineering machine.
阐述了交流传动牵引变流器的基本电路原理 ,结合国产 DJ型电力机车、NJ1型内燃机车、DWA型地铁工程车等交流传动机车牵引变流器的主要技术参数 ,对交流传动牵引变流器的技术特点及其发展过程作了较为详细的叙述
5.Method: The traction group in 21 cases used the ATA-ⅡD automatic traction bed.
方法 :单纯牵引治疗组 (2 1例 )使用ATA -ⅡD型腰椎自动牵引床行间歇牵引 ;
6.The circumstance of EVS 17 was introduced briefly The current state and the future development trends of electric vehicle and relative traction batteries were analyzed At the end, some suggestions on how to develop EV and traction batteries in China based on China?s practical situation were proposed
简要地介绍了第 17届国际电动车会议的情况 ,分析了电动车和相关动力电池的发展现状和今后的发展趋势。 最后 ,根据中国的实际现状 ,对如何在中国发展电动车及动力电池提出了建设性意见。
7.Through analysis of the characteristics, structure and parameter of 3 -phase asynchronous traction motor,in regard to its specific role as traction power in locomotive, the author put forward the problems that with the same slip ratio, in low frequency stage, the output torque of motor goes down and the mechanical characteristics become "soft". Theoretically,the auther analyses the cause for the problems and airs his view on these two problems.
通过对三相异步牵引电动机的特点、结构、参数的分析，结合异步电动机用于机车做为牵引动力的特定工况，提出了在同一转差率下，低频区电动机输出转矩下降、机械特性变软的问题，从理论上分析了问题产生的原因，并针对这两个问题提出了作者的看法。
8.Methodology: Patients will be divided into 2 sample groups. 61 of whom shall be treated with semi-conductor laser together with traction-manipulation massage on the treated part, Whilst the other 56 patients, the comparison group, shall be treated only with traction-manipulation massage.
方法：将患者117例分为2组，治疗组61例，采用半导体激光照射配合牵引下推拿法治疗；对照组56例，采用单纯牵引下推拿法治疗。
9.By discussing control principle of the TCU(Traction Control Unit) and the dynamic characters of the traction system of the metro vehicle,a real-time testing platform for the TCU was proposed based on the xPC Target toolbox of Matlab.
在讨论地铁牵引系统动态特性和控制原理的基础上,应用MATLAB的xPC Target工具箱,构建了针对牵引控制单元(TCU)的实时仿真测试平台。
10.The equilibrium current in 24-pulse traction rectifier system is analyzed. The relation between critical load and resistance of traction rectifier transformer is discussed.
摘要分析了24脉波牵引整流系统中的均衡电流，讨论了临界负载与牵引整流变压器阻抗参数的关系。
