可牵引的

The model is usually an inhomogeneous system of linear equations. It is pointed out that the general solution of the homogeneous system of linear equations can satisfy the request of making the wires tight, and the special solution of the inhomogeneous system of linear equations are not smaller than zero, so their sum is greater than a given mumble.

由于多自由度绳牵引并联机构的静力学模型一般是一个非齐次线性方程组，本文指出可让对应齐次方程组的通解的最小值满足绳保持张紧的条件；让非齐次线性方程组的特解非负，而避免利用对应齐次线性方程组的通解保证非齐次线性方程组的解不小于给定的最小值。

Through the experiments of three kinds of models mentioned above, the structural deformations of "outflow-extension","strike-slip-extension" and "uplifting-extension" are studied and some viewpoints involving that the plastic flow in the lower lithosphere controls the extensional structures are stated as follows:(1) Regional extensional structure does not result from the direct extension along the upper crust, but from the plastic flow in the lower lithosphere and its dragging and stretching the upper crust;(2) Deformation of continental extensional structure resulted from the active uplifting of mantle is conditional that the significant extension occurs only in the models with free- or outflow-boundary condition on both sides, whereas the passive uplining of mantle exists widely, because it is an inevitable consequence of the efiect of thermo-gravity isostasy;(3) Strike-slip shearing in the lower ductile lithosphere, including site-restricted and site-unrestricted shearing, can result in various types of extension structures;(4) The"graben-horst"type extensional structures can be formed in difierent mechanisms, including outnow-extension, shear-extension, uplifting-extension and their synthetical action.

通过上述三种模型的模拟试验，比较系统地研究了"泄流-伸展"、"走滑-伸展"和"上隆-伸展"等构造变形，提出岩石圈下层塑性流动控制了各种伸展构造变形的观点，主要包括以下几方面：(1)区域性伸展构造不是上层直接受到拉伸，主要是下层流动牵引上层伸展；(2)地幔主动上隆引起大陆伸展构造变形是有条件的，需要侧边伸展或不受约束的边界条件，而被动上隆广泛存在于地壳断裂或减薄部位，是热和重力均衡的必然结果；(3)下层塑性流动中的走滑剪切，包括限位剪切或非限位剪切，可以引起不同型式的伸展构造；(4)总结了"堑-垒"型伸展构造的多种成因机制，包括泄流、走滑、上隆及综合作用均可形成"堑-垒"构造，但组合形式不尽相同。

The welding of end ring of alternating current machine and the conducting bar is the key technology for manufacturing of asynchronous traction motor with high power. China South Locomotive and Rolling Stock Industry Corporation had taken this significative study as a key project for the manufacturing of alternating current machine. According to the welding of end ring of alternating current machine, the welding of copper and copper alloy is described in this paper. Results obtained in this study are as follows. 1.By the comparison of oxyacetylene gas brazing, induction brazing and resistance brazing, it was found that high-quality welding joint could be obtained by induction brazing, which also had the highest efficiency.

交流电机端环与导条的焊接是大功率异步牵引电动机制造的一项关键技术，开展其焊接工艺研究具有重要的意义，中国南车电机公司将此课题作为解决交流电机制造的一个重点项目，本文结合交流电机转子端环焊接的课题，对铜及其合金的焊接进行了研究，主要研究结论如下： 1、通过氧乙炔火焰钎焊、感应钎焊、电阻钎焊等焊接方法的对比试验发现感应钎焊可获得优质的焊接接头，且感应钎焊的焊接效率也是最高的。

It is interesting that cervical root avulsion is a relatively frequent cause of superficial siderosis of the CNS. It is possible that trauma to the nerve root damages the fine venous plexus within the root, or the medullary and radicular veins that run along the nerve root, resulting in a fragile vascular scar.

很有意思的是颈神经根撕脱也是相对比较常见的病因之一，可能因为神经根的创伤可损伤神经根处的静脉丛及沿着神经根走行的根静脉，导致脆性血管损伤形成疤痕，当屈伸颈部时因牵引而破裂出血。

As the sky near and far is all caged in a misty fog, autumn rain, like a rhythm, is dropping down on the top of houses, sunblind and red leaves, splashing drops and drops of rain flowers, which adhere on them and are reluctant to leave away, but have to drop down onto the earth because of the gravity.

秋雨远近的天空都笼罩在一片迷雾中，秋雨，晰晰沥沥地下着，滴滴答答地落在人家的屋顶上，窗檐上，红了的秋叶上，溅起点点，似盛开的花朵，粘在上面，不仍离去，可又不得不因重心的牵引而渐渐落下。

Type NHSS wire rope pulling hoist is widely suitable for use in bridge-construction,laying of large-size pipes,installation and adjusting of machinery an electric apparatus,and large reaction tower of petrochemical industry;the installation and alignment of storage tanks;erecting,fitting,welding and alignment of masts,steel concrete timber structures;laying and translocating of rails and sleepers;loading and unloading bulky heavy goods during transportation.cable tensioning;demolishing of gallery supporting logs;stacking forrestry wood;and othersimilar cases.

NHSS型钢丝绳手扳葫芦可广泛用于建筑施工、大型管道铺设、机电设备和石油化工大型反应塔、储罐的安装、校准、铁塔及其它钢木结构的竖立、拼装焊接、校准、铁轨、枕木的铺设、移位、交通运输中笨重货物的装卸、电线张紧、坑道支撑木的拆除、林区木材的集放等等，对于局部空间受到限制的狭窄工作场所、高空作业、野外作业、坑道、深井作业和无机电供能场所的各种牵引、提升作业、选用本系列产品尤为适宜。

With the uprising movement of Chinese railways and progress of electric railroad, the small tonnage full hydraulic railway crane becomes more urgently needed for development with characteristics of fast speed self-propelled running and high speed in train formation, hence, the high level requirement is resulted in terms of train formation and self-propelled running speed of railway crane. For 20t universal railway crane, features such as running with the load and weight lifting due to high hauling capacity are required besides hook lifting, bucket grabbing and magnetic panel lifting.

随着我国铁路事业的不断壮大，电气化铁路的发展，开发小吨位的自力走行速度快、回送速度高，能满足电气化线路的立杆作业的全液压铁路起重机迫在眉睫，对铁路起重机的回送和自力走行速度有了更高的要求。20t多功能铁路起重机，即具有吊钩、抓斗、磁盘吊3种功能外，还具有一定带载走行以及因牵引能力大也可作为吊车机使用。

The evolution process of landslide could be divided into 4 periods: beginning and accelerating period, quick-moving period, braking period and tamping period. The damage scope and accumulation extent are also simulated satisfactorily.

计算结果表明，根据位移和速度的变化，可把整个滑动过程分为4个阶段：即启动加速阶段、高速运动阶段、碰撞减速阶段和缓动夯实阶段；较准确的模拟了滑坡体的灾害影响范围和堆积规模；通过对滑体不同点位移和速度的分析，进一步明确了滑坡为牵引式滑坡和不同点在速度、位移和加速度上的变化规律。

First, it diagnoses and analyses the maglev train's suspension system and traction system by applying the FTA and fuzzy FTA method. Furthermore, it presents the new way to solute the diagnosis searching arithmetic by building the searching matrix based on the factors such as components' key weightiness, faults happen probability, searching cost. Then it can get optimal searching sequence for seeking the reason to the faults. Second, it builds the train's rank evaluation model based on multiple hiberarchy neural networks, after it takes the strategy that set the component diagnosis and whole train fault rank evaluation into two steps. Third, it deeply analyses reliability of the maglev train's power system with function-correlated feature, by the method that combining the FTA with the Markov model. Finally aiming at maintenance ahead of the fault, it proposes the blue print for the maglev train's maintenance. What's more, it introduces the design and realization to recorder for the train run data in detail.

应用故障树和模糊故障树分析法对磁浮列车悬浮系统、牵引系统进行全面的诊断分析，提出了以部件关键重要度、故障概率、搜索代价为因素，建立搜索决策矩阵，综合排序的搜索算法；采取部件诊断和列车集中评估相结合的分层诊断策略，建立基于多重神经网络的列车故障等级评估模型；结合故障树和马尔可夫模型对具有功能相关特性的列车电源系统进行可靠性分析；着眼事前维修，提出了列车运行维护方案，并设计实现了列车运行数据记录器。

SBL-5: single and single-roll five three-roll combination models, this model than SBL-4 March 5 more than two sets of roller traction, the major manufacturers use of single lines and the importation of equipment, set the length of all home; Feedback combining the experience of each other, after hard of concentrated study and repeated experiments, developed a new type of unit, a multi-purpose machine, with the thickness width can be arbitrarily regulated, transparent belts, and can produce a variety of belt .

SBL-5型：单五辊和单三辊组合机型，这种机型比SBL-4型多2套三五辊牵引，运用各大厂家单机生产线和进口设备，集众家之长；结合用户反馈的经验，取长补短，经过辛勤的潜心研究和反复试验，研制出的一种新型机组，可一机多用，带的厚薄宽窄可以随意调节，透明带以及各种各样的带都能生产。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐