桥的

In association with the improvement design practices on winding equipment for main cable of large span cable bridges liking Shantou Gulf Bridge, Xiling Yangtse River Bridge and Xiamen Haicang Bridge, some contents are systematically described on the basis of electric control system of ZLC series winding machine for main cable, including mechanism composition of the winding machine for main cable, mathematical relationship between rotation speed of winding system and travel speed of the winding machine, work principle of accurately matching control on the two speeds with PLC and frequency converter, wireless measurement and monitor of winding system tension, automatic override control on cable clamp as well as practical effect of a real bridge application.

结合对汕头海湾大桥、西陵长江大桥和厦门海沧大桥等大跨度悬索桥的主缆缠丝施工设备－主缆缠丝机的改进设计实践，以ZLC系列主缆缠丝机的电气控制系统为基础，系统介绍了主缆缠丝机的机构组成、缠丝系统旋转速度与缠丝机行走速度之间的数学关系、采用PLC及变频器对两速度进行精确匹配控制的工作原理、缠丝系统张力的无线测量、监控、索夹的自动跨越控制以及实桥的应用效果。

In Broad Band ,Curcuit signal graphics is achieved by oscillograph ,and packet loss rate , throughput, Latency , back-to-back and so on.;In VoIP, the device can communicate with FXO 3804 of TAIWAN Welltech and DT60 of BEIJING JIAXUN FEIHONG, At that time, Ethereal and PalmTool of PA1688 testing are introduced; In CATV, flatness ,signal graphics of radio frequency are tested by CATV stroboscope.

使用示波器测试数据部分的电路信号波形，使用网络分析仪测试丢包率、吞吐量、时延和背压等以太网指标的测试，并记录最终测试结果；电话部分主要是与台湾伟桥的FXO 3804和北京佳讯飞鸿的E1数字中继网关DT60，实现基于H.323协议的VoIP电话通信，同时介绍使用Ethereal软件和PA1688专用测试工具PalmTool的测试分析情况；电视部分主要是使用CATV频谱仪测试输出射频信号的平坦度、信号波形等分析信号质量，并通过实际电视接收观察输出的射频信号质量。

The concept of influence degree of natural vibration period by cables is shown,and the influence of cables to the property of natural vibration of extradosed cable-stayed bridge s is analyzed by taking Xiaoxihu extradosed cable-stayed bridge in Lanzhou City as an example.

以小西湖矮塔斜拉桥为例，通过引入拉索自振频率影响度的概念，分析了拉索的存在对矮塔斜拉桥自振特性的影响，探讨了矮塔斜拉桥的自振特性与相应连续梁桥的区别；在分析矮塔斜拉桥地震反应的基础上，通过引入振型贡献率的概念，分析了高阶振型对矮塔斜拉桥动力性能的影响；分析了矮塔斜拉桥的振型耦联效应。

Usually there are two bridging metho d s: static and dynamic. Static method is more efficient but not fit for a large s y stem, while dynamic bridging can be realized by virtue of dynamic mechanism, and in such a case only one bridging interface is needed, which is easy to be maint ained.

通 常，桥接有静态桥接和动态桥接2种方式：静态桥接效率高，但不适宜于大规模的系统；动态桥接采用动态机制实现，只需一个桥接接口，易维护。

Of the 26 lesions with pontine and bulbar involvement, three had no association with other lesions (Fig 2). Twelve were associated with tegmental and superior cerebellar peduncular extension, and six showed corticospinal tract involvement in continuity with an MDJ lesion. In one patient with additional telencephalic lesions, the right side of the pons was hyperintense on long TR/TE images that did not cross the midline, suggestive of an arterial lesion (Fig 3). In two patients with pontine tegmental lesions, there was an associated middle cerebellar peduncle and deep cerebellar white matter involvement (Fig 4). Two others had associated cervical lesions.

在26处脑桥延髓区病灶中，3处病灶仅限于脑桥延髓区，其它部位无病灶（图2）；12处病灶还同时伴有背盖部和小脑上脚/结合臂处病灶；6处病灶为与中脑-间脑接合处病灶相连的皮质脊髓束受累；还有1例患者除端脑见病灶外，右侧脑桥于T2像也见高信号病灶，但未超越正中线，提示可能系动脉病变所致（图3）；2例脑桥背盖部病灶的患者同时伴有小脑中脚/小脑脑桥脚和小脑深部白质受累（图4）；还有2处脑桥延髓区病灶还同时伴有颈髓病灶。

To eliminate abnormity wear of tires in double-front-axle system of heavy truck, the kinematics and dynamics analysis method is set forth. On the base of the results for heavy double-front-axle truck load distributing and manipulate stability, tire uniformity load condition and deficiency steering characteristic condition of heavy double-front-axle truck are put forward. Steering trapezia space movement formula, double-swing-arm space movement formula and double-swing-arm movement formula in actual status of heavy double-front-axle truck are fetched. Optimization models of steering trapezia and double-swing-arm are founded and optimization arithmetics of transmission system in double-front-axle steering are compiled.

本文以消除重型汽车双前桥转向系统轮胎异常磨损等为目的，阐述了双前桥转向系统的运动学、动力学分析方法；在分析了双前桥重型汽车载荷分布和操纵稳定性的基础上，提出了双前桥重型汽车轮胎均载应该满足的条件、双前桥重型汽车具备不足转向特性应该满足的条件；推导了双前桥转向梯形空间运动关系式、双摇臂机构空间运动关系式和双前桥汽车实际工况下的运动关系式，建立了转向梯形和双摇臂机构优化设计模型，编制了双前桥转向传动系统优化算法。

A sentinel at each end of the bridge stood with his rifle in the position known as "support," that is to say, vertical in front of the left shoulder, the hammer resting on the forearm thrown straight across the chest - a formal and unnaturai position, enforcing an erect carriage of the body.

桥的每头都有个佩戴着步枪的哨兵，形成了支撑之势，就是说，垂直于左肩膀的前方，锤子搁放在穿过胸膛的直放的前臂上，这是一种正式的，但是不自然的姿势，迫使直立的身体姿势

A sentinel at each end of the bridge stood with his rifle in the position known as "support," that is to say, vertical in front of the left shoulder, the hammer resting on the forearm thrown straight across the chest - a formal and unnaturai position, enforcing an erect carriage of the body.

桥的两端各自站着一位表明&支持&的持有步枪的哨兵，那就是说，垂直于他们的左肩前面，紧紧的被钉牢，由笔直的经过胸膛的前臂——一个种正式而不自然的姿势，强行一种笔直的身体姿势。

In the interim governance new river dug river 3.3 kilometres, the new zoo at the locks, new long river bridge, forklifts official, Beijing kits Railway Bridge, Highways and Bridges Academy, timber building bridges, small East Village West Bridge, the small East Village Bridge, MTR Cheliangduan, xinjiekou Main Street Bridge, North riparian communities a total of 11 blocks across the bridge, one Block secret scheme, two blocks ran Jiezhizha 2 Block Terminal 1 Block, fill water gates, the original half-buried in the ground with heavy river finally light.

在此次治理中转河新挖河道3.3公里，新建动物园船闸一座、新建长河桥、叉车厂桥、京包铁路桥、学院路桥、木材大厦桥、东小村西桥、东小村东桥、地铁车辆段、新街口大街桥、北滨河路桥共11座跨河桥，1座暗涵，2座暗沟节制闸，2座码头，1座补水闸，原来被埋在地下的一半转河终于重见了天日。

Factor, decide at the pack head to go to Xian to build 1 lately sets up a railroad, this engineering is a pair of track circuit with total goods, design soon the 250 Kms/h , in set up of yellow river especially big bridge being located on this circuit, cross over yellow river length to reach to a 3912.89 ms, in especially the construction of the big bridge, measure the work show of is importance, relate to whole bridgeses of run-through, measure in use the whole station instrument and intelligence calculator, carry on a precision to measure to establish to the point, come to a to show Zhao in actually the work of effect, and speed construction progress, economized cost to create a performance.

为了适应经济的发展，进一步的开发大西北，也为了缓解内蒙古包头及东胜地区煤炭资源外运的运力紧张问题，结合当地的经济技术地质等因素，决定在包头至西安修建一条新建铁路，本工程为双线客货共轨线路，设计时速250Km/h，在建的黄河特大桥位于本线路上，跨越黄河长度达3912.89m，在特大桥的建设中，测量工作显的尤为重要，关系到全桥的贯通，测量中使用全站仪及智能计算器，对点位进行精确测设，在实际工作中达到了显著的效果，而且加快了施工进度，节约了成本创造了效益。

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