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Based on the wheel-rail dynamic coupling analysis, the dynamic force loaded on the track bed by different subway tracks is gained which is used in the finite element model.

将轮轨动力耦合分析获得的不同地铁轨道作用在道床上的动荷载作为有限元分析模型中的作用力，计算分析了不同轨道结构地段的地表振动传播特性，结果表明：在50 m范围内浮置板减振效果明显，在50 m以上轨道减振形式对地面振动影响不明显。

Meanwhile, metal powders of Cu and Pb decrease the friction coefficient of PTFE composites, but Ni powder increases the friction coefficient.

金属填料Cu及Pb降低了PTFE复合材料的摩擦系数，Ni则增大了复合材料的摩擦系数；Cu的减磨效果最好，而Pb的减磨效果则最差。

FIFA workers, who'd had their tools updated, their aspirations reset and their allowances slashed, puzzled over the greenhorns' strenuous efforts and dubious results.

国际足联的员工们，他们的设备焕然一新，但他们的抱负面目全非，他们的津贴减了又减，他们对菜鸟们所谓的努力和成果充满了不解和怀疑。

Simultaneously founding the mechanical modelof the seeder and analyse engine's libration when it was running at 50r/s,42r/s,38r/s,25r/s,7r/s influence on arranging seeds and use damping spring and latex to reduce libration about this part. Analysed the treading and swerving capability of the Paddy direct-seeding machine. Research results indicate: only boat motherboard's front across baffle's angle is 30 degree, the section shape of motherboard is undee, depth of section is 30mm, direct seeding engine stepped resistance and soil is least, turning

研究结果表明：当船底板前横挡板角度为30度、底板截面形状为波浪形、底板截面深度为30mm时，直播机在行走时行走阻力最小，壅土最少，转弯时转弯阻力最小；当发动机38r／s时，发动机对排种盘的振动影响最大，加刚度为100N／mm的减振弹簧或厚度为35mm的橡胶后，排种盘的振动量会大大降低，减振后的振动对排种无重大影响；仿真结果还显示，排种器力学模型、直播机行走、转弯性能和排种性能合理。

Using test apparatus underwater explosion,it is studied that the desensitization phenomenon of emulsion explosives which is sensitized by glass micro-balloons and expanded perlites in different dynamic pressures,and the desensitization degree of two kinds of sensitized methods are compared at the same dynamic pressure fore-and-aft.

利用水下爆炸测试系统，对不同动压作用后玻璃微球和膨胀珍珠岩敏化的乳化炸药的减敏现象进行了研究，比较了在相同动压作用前后两种敏化方式的乳化炸药的减敏程度。

The paper is based on the project"Anti-rolling tank test equipments on the ship"among the country"211"key invested projects. The design and realization of test platform and related theoretical questions are analyzed and further discussed.

本文是结合国家&211&工程重点投资建设项目&船舶减摇水舱试验装置&的研制工作进行的，对船舶减摇水舱试验台架的设计和实现及相关的理论问题进行了深入分析和研究。

ABSTRACT The paper is based on the project"Anti-rolling tank test equipments on the ship"among the country"211"key invested projects. The design and realization of examination equipment and related theoretical questions are analyzed and further discussed.

本文是结合国家&211&工程重点投资建设项目&船舶减摇水舱试验装置&的研制工作进行的，对船舶减摇水舱试验装置的设计和实现及相关的理论问题进行了深入分析和研究。

This paper introduced the parameter frequency response method,developed ship rolling frequency response function equipped with two U-tube anti-rolling tanks with different natural frequencies,analyzed the tank parameters relative to rolling frequency response amplitude,and researched the effect of tank parameters on the ship rolling amplitude.

本文给出了参数频率响应法，推导了装备两个具有不同固有频率的被动式U型减摇水舱的船舶横摇频率响应函数，分析了影响船舶横摇频率响应幅值的水舱参数，通过仿真详细研究了水舱参数对船舶横摇减摇的影响。

There is a good linear relation among the height of semi-circle Drawbead, the thickness reduction and the equivalent strain of the sheet, The letter two will be risen along with the height of semi-circle drawbead.

筋高与板料的减薄量和累积等效应变之间存在良好的线性关系，随着筋高的增大二者也增大；并且拉深筋的各圆角半径的增大都使减薄量和累积等效应变减小。

This study mainly from the cement-based self-leveling mortar work, and mechanical properties to consider, analysis superplasticizer, aggregate, mineral admixture, can be dispersed polymer powder to its various properties of addressing the mobility and Stability, as early as strong moderate condensate, the contraction and expansion, superplasticizer incorporation and mortar expansion of the loss of contradictions, and optimize the mix finalization of the scope and mortar flow analysis of factors affecting the performance.

本实验主要从水泥基自流平砂浆的工作性，力学性能考虑，分析高效减水剂、集料、矿物掺合料、可再分散聚合物粉末对其各种性能的影响；解决大流动性和稳定性，早强和缓凝，收缩和膨胀，高效减水剂的掺入和砂浆扩展度经时损失的矛盾，最后确定优化配合比范围；并对砂浆流变性能影响因素进行分析。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。