All of the hydraulic structures are arranged in the right bank and four underground seepage tunnels are arranged parallel in horizon , and the axle wires intersect with syncline axis almost perpendicularity , and with rock formation obtusely . complex underground tunnels are formed under such formidable conditions , and each of seepage tunnels crosses nuclear of syncline and comes up against interlaminar sharing disturbed belt at different footage 四条引水发电隧洞在平面上平行布置，轴线方向与本区构造线方向近于垂直，与岩层走向大角度相交，构成一复杂地下洞室群，并在不同洞段通过沙金坝向斜核部，且遭遇多条层间剪切错动带。
That is , the space mega frame structure of a super tall building was simplified as a composition consisting of the mega columns and gieders supported on elastic subgrades , and interactions between the soil and the foundation and the superstructure of the model were analyzed by matrix displacement method 将空间巨型框架结构中的辅助框架柱只考虑其轴向刚度，沿巨型框架梁的轴线方向连续化后，作为巨型梁单元的文克弹性地基，把巨型梁桉文克弹性地基梁来处理，然后将巨型柱和巨型文克弹性地基梁组成空间巨型框架，在考虑了地基的弹性变形后，用矩阵位移法进行位移和内力计算。
The submarine structure is simplified to single or double infinite cylindrical shell stiffened with rings , bulkheads and stringers , focusing on underwater sound radiation from the single shell . the shell motion is described by donnell ' s theory including excitation forces and reactions of rings , bulkheads , stringers and fluid , which leads to the fluid - structure coupling vibration equation . expressing displacements by velocities , applying modal expansion circumferentially and fourier transformation longitudinally result in the shell ' s modal equations of motion 壳体的运动方程采用较为简单的donnell理论描述，运动方程中包括了激励力、加筋结构(环肋、舱壁和纵骨)和流场对壳体的作用力，从而组成流场-结构的耦合振动方程，并进一步将方程中的位移用速度表示，然后沿轴线方向进行fourier变换，将速度和各项荷载沿圆周方向进行模态展开，得到了壳体振动的模态运动方程。
In fluent , the flow field of the tube wall , center , top , middle and bottom of the evacuated solar collector tube can be observed , the temperature - time curve and radial temperature gradient can be obtained , the heat loss of different part can be directly captured . 3 . all kinds of effect factors of the flow field and temperature field have been analyzed 通过fluent计算，清楚地观察到太阳能真空集热管壁面和中心部分，顶部、中部和底部在各种工况下的流场分布均不相同；得出了各种工况下的温度-时间变化曲线，沿轴线方向的温度梯度；同时还计算了各部分热损的传热流量； 3
( 3 ) in terms of flowing characteristic of drilling fluids on the roller screen , the flowing equations at the axis direction and the tangent direction and the flowing through the screen , and the continuously flowing equation of drilling fluids are built . the characteristic - difference equations of flowing model for drilling fluids are given and the theoretical analysis is made ( 3 )根据钻井液在筒式筛网上的流动特点，建立了筒式筛网上钻井液沿轴线方向流动、周向流动和透筛流动的流动方程，以及钻井液的连续流动方程，利用特征线法写出了筒式网上钻井液流动模型的特征差分方程，并作了理论分析。
Firstly , when the pipe flow was laminar , the movement of fibers was computed in the 2 - d force formulae that were deduced from the slender body theory and in 3 - d integral method . results revealed that angles between fibers " axis and the orientation of flow would concentrate gradually on a low number as the re numbers increased . that is , the axis of fibers would rotate toward the orientation of flow 首先，当管道内流动为层流时，分别利用从细长体理论出发得出的纤维二维受力公式和三维分段积分计算方法模拟了大量纤维在流场中的运动，然后在最终时刻统计了纤维的偏角分布，并得出相同的结果：随着re数的增加，纤维粒子的偏角逐渐集中于小角度，即纤维轴线方向越来越集中于流向，此结果与实验吻合较好。
Because the microwave field in simple milo is n mode along the axis and the field is of the standing wave structure . the tapered slow wave structure is introduced to make the field in the downstream of interaction space have a travelling wave structure and easily make the microwave energy transport out of the device 我们在milo的阳极慢波结构叶片上引入了渐变结构，将驻波形式的电场改变为行波形式，微波在轴线方向不再保持模式，有利于微波能国防科学技术大学研究生院学位论文量的输出，此项改进对工作主频影响不大。
The thermo - mechanic relations of the shape memory alloy is systemically analyzed , then analyses and experiments on the important characteristic parameters of one kind of sma , such as the recovery strain of free recovery and the recovery stress of restrained recovery and so on are all accomplished . according to the discussion in the dissertation , the sma normal to the axe of the shell , as the number of the sma increases , the deformation of the shell increase 选择了一种合金丝进行了深入研究，集中分析了合金丝的性质，测量该种合金丝的各种性能参数。通过本文的研究可以发现，将合金丝置于垂直于壳的轴线方向，增大合金丝的数量可以达到使曲壳变形增大的目的；同时控制合金丝的工作温度范围，可以控制壳的变形和平滑度。
