导出

Based on the generalized potential energy variational principle of nonlinear elasticity theory with large deflection,the incomplete generalized potential energy functional is established on the space coupling free vibration of three-span self-anchored suspension bridge by considering the effect of coupling of flexural and axial action,and shearing strain energy of stifening girder.

摘 要：基于大位移非线性弹性理论的广义变分厚理，考虑了加劲梁的压弯耦合和剪切应变能的影响，建立了三跨自锚式悬索桥空间耦合自由振动的大位移不完全广义势能泛函，通过约束变分导出了自锚式悬索桥的竖向挠曲振动、横向挠曲振动和纵向振动的基础微分方程，忽略非线性项的影响，进而得到线性振动微分方程。

Based on the generalized potential energy variational principal of nonlinear elasticity theory with large deflection, the incomplete generalized potential energy functional with large deflection is established on the space coupling free vibration of three-span self-anchored suspension bridge by considering the effect of axial compressive and shearing strain energy of stiffening girder.

摘 要：摘要：基于大位移非线性弹性理论的广义变分原理，考虑了加劲梁轴向压缩应变能和剪切应变能的影响，建立了三跨自锚式悬索桥空间耦合自由振动的大位移不完全广义势能泛函，通过约束变分导出了自锚式悬索桥的竖向挠曲振动、横向挠曲振动、纵向振动及扭转振动的基础微分方程，为自锚式悬索桥的固有振动性状分析提供可靠的理论依据。

The project discussed influence of damp force to the parameter of MR damper and carried finite element analysis of MR flow field and shearing stress.

推导出Nano-MR阻尼器阻尼力的计算公式。讨论了阻尼器结构参数对阻尼特性的影响。

This paper can infer time of GPS satellite clock that there is a periodic variation of 12 sidereal hour, and GPS satellite orbit period is just 12 sidereal hour, no doubt, it be designed for to check up time.

本理论可以推导出GPS卫星钟的快慢，有12恒星时的周期变化，而GPS卫星轨道周期正好为12恒星时，极可能是为了方便校对时间而设计的。

On the basis of clastic theory, a basic differential equation characterizing the movement of ground surface and rock strata is derived and a sieve method for influence functions brought forward.

本文根据碎块体理论导出了表征岩层和地表移动的基本微分方程式，提出了影响函数的筛选法，确定了威布尔分布密度函数是最佳的影响函数形式。

The correlation between the effective energy of wind ,and the wave,wind and siltation of channel was derived.

导出了"有效风能"与浪、沙、航道淤积之间的相关关系

Experiment and flow visualization are conducted in a water-filled cavity which cover the range of Ra=1×10〓----6×10〓 and Pr=3. 3---6. 5. Similarity theorem is applied in analytical investigations. And core region stratification effects to heat transfer are studied. By using scale analysis, temperature and velocity profiles in turbulent natural convection boundary layer are obtained. The results reveals that for turbulent natural convection in enclosures, the bulk of the cavity fluid is essentially statement with thermally stratified temperature and the only substantial motion is that in the boundary layer along four side walls.

在实验方面，作者在高Ra范围内（Ra〓=1×10'~Ra〓=6×10〓，Pr=3.3~6.3）对封闭空间实验台以蒸馏水为介质进行了换热实验与流动显示；在理论分析方面，作者采用相似原理导出了分析解；研究了核心区温度分层规律及其对换热的影响；另外还运用尺度分析法探讨了紊流自然对流边界层温度与速度分布。

Starting from the differential equations which describe the gas-solid flow characters in the raceway of blast furnace,and using the similarity transformation technique to derive the similarity criterion,a cold model was set up to simulate the gas and coke movement in the raceway.

从描述回旋区内气固流运动特性的微分方程出发，应用相似转换法导出相似准则，建立模拟回旋区内煤气及焦炭运动的冷态模型。冷态试验采用了大米、小米、绿豆等作为模型的填充料层；应用HG-100K高速摄像机记录了模型内回旋区的大小与颗粒运动轨迹；并详细分析了影响回旋区大小的主要因素

It is shown by numerical examples that satisfactory convergence and simple calculation...

数值分析结果表明，所导出的算法具有较好的精度和收敛性，计算过程简单方便。

By applying the statistical theory for thermal defects of an imperfect crys-tal to polymer liquids, a simple relation between the occupied-site fraction andthe reduced temperature has been derived and the SS EOS is simplified to aso called simplified hole theory equation of state.

本工作将不完全晶体中热缺陷的统计理论用于聚合物液体中，得到被占座席分率与对比温度的一个简单关系式，导出了简化的空穴理论状态方程。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。