下梁

In order to study Y style eccentrically braced link beams of behavior under seismicloading, the calculated model of link beam is established.

Y型支撑耗能梁段在低周循环荷载作用下的抗震性能研究，本文建立了耗能梁段计算模型。

Based on 3D steady and incompressible N-S equation and k-ε turbulent model, the aerodynamic performance of three different design options of 160 km/h container flat wagon was analyzed and compared using finite volume method. The three design options are as follows: the first design option has no headwall and the side surface of side beam is flat; the second and the third both have headwall and high side beam, and the side surface of side beam of the second is obtuse, while the third is cambered.

基于三维、不可压、定常N-S方程和k-ε双方程湍流模型，采用有限体积法对3种不同设计方案在运行时速为160 km/h的集装箱专用平车在有、无横风情况下的气动性能进行分析与比较，其中：方案一的平车无端墙，侧梁侧面平直；方案二和三的平车均加有端墙，且侧梁加高、侧面形状分别为钝形和弧形。

Based on 3D steady and incompressible NS equation and kε turbulent model, the aerodynamic performance of three different design options of 160 km/h container flat wagon was analyzed and compared using finite volume method. The three design options are as follows: the first design option has no headwall and the side surface of side beam is flat; the second and the third both have headwall and high side beam, and the side surface of side beam of the second is obtuse, while the third is cambered.

摘 要：基于三维、不可压、定常 N S 方程和 k ε双方程湍流模型，采用有限体积法对3种不同设计方案在运行时速为160 km/h的集装箱专用平车在有、无横风情况下的气动性能进行分析与比较，其中：方案一的平车无端墙，侧梁侧面平直；方案二和三的平车均加有端墙，且侧梁加高、侧面形状分别为钝形和弧形。

The result shows that there is no Hopf bifurcation for the structure in inviscid fluids.

假设各板在同一时刻有相同的变形，建立了流体作用下简支板状梁的立方非线性模型，并利用Hopf分叉代数判据分析了简支板状梁流固耦合结构的分叉，结果表明该结构无Hopf分叉现象。

Only when the Qin and Han Dynasties in Fujian and Guangdong jagged ridge of the channel for clearance Livistona; of the Jin Dynasty in the early years of Liangshan County under the build-sui; Liang-day supervisor (502-519 years) years in the city Jing to build water-lan County; beam Datong 2006 (In 504 AD) built in Kowloon River Longxi County; 12 Suikai Huang (592 AD), Sui and security, county Longxi into the blue water.

秦汉时只在闽粤通道的盘陀岭设蒲葵关；晋代初年在梁山下建绥安县；梁天监（502-519年）年间在荆城建兰水县；梁大同六年（公元504年）在九龙江畔建置龙溪县；隋开皇十二年（公元592年），并绥安，兰水入龙溪县。

The equations of motion for the nonlinear nonplanar flexible cantilever are derived by using the generalized Hamiltons principle. Then, the Galerkin procedure and the method of multiple scales are used to give the perturbation analysis of the system and the average equations. The three resonant cases are considered in this dissertation.

对于非线性非平面运动悬臂梁，利用广义Hamilton原理详细推导了运动微分方程，综合运用Galerkin离散方法和多尺度法对非线性非平面运动悬臂梁的动力学方程进行摄动分析，得到了三种共振情况下的平均方程。

Results: In the experimental group, both TBV%(the fraction of trabecular bone volume) and MTT of the condylar subchondral bone were significantly decreased, whereas the RS%(the fraction of resorptive surface) and OS%(the fraction of osteoid surface) significantly increased.

结果：实验组大鼠髁突软骨下骨小梁相对体积减小，平均宽度变薄，而骨小梁吸收表面百分比与类骨质表面百分比比对照组均增加。

In this paper the principle of substructure analysis of matrix displacement method is used to condense superstructural stiffness of tall building to the boundary stiffness of the foundation beams, the subsoil model of the layers summation procedure of finite compressible layer is introduced herein.

本文采用矩阵位移法的子结构分析原理将高层建筑的上部结构刚度缩聚为基础梁的接口刚度。同时，引入有限压缩层的分层总和法地基模型，通过基础梁与地基界面处矩形面积荷载下沉降积分变换，获得地基表面的柔度矩阵。

It is studied that the responses of overhead crane when the trolly is running. The simulation of lifting load process, location of the trolly and stresses of structure by computer are discussed and after verified by the experiments, we have got distribution function of stresses in stucture of overhead crane under different load states and distribution functions of location of the trolly.

研究了小车运行时桥式起重机的动态响应，讨论了起重机吊重载荷过程、小车位移及桥式起重机主梁结构应力的计算机仿真，在得到实测数据的验证之后，通过计算机仿真得出不同载荷状态及不同小车位移分布下桥吊主梁结构应力的分布规律。

With the increasing of concrete deck slab gap for dense transverse girder deck system, the vertical displacement of tied-girder increases unconspicuously, and the internal forces of tied girder and arch rib vary slowly.

针对高速铁路下承式结合梁系杆拱桥，通过有限元分析，对纵横梁桥面系和密布横梁桥面系2种结合方式、混凝土桥面板不同的分块方式等问题进行研究。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！