查询词典 plane symmetry

Distinguishing methods of various zero members i n special node s are summarized as well as the method how to utilize the symmetry of structure to build local coordinate system correctly for simplified internal force calculation of plane truss.

归纳了特殊结点中各种零杆的判别方法，总结了如何正确地建立坐标系和利用结构的对称性，以便达到简化平面桁架内力计算的目

Therefore, the possibility that the film flow was in onflow state was very low under the fisher swing frequency even though the swing affixation force acted on the film. In falling film absorption process, the velocity, temperature and concentration distribution of the liquid film was symmetry on the swing plane basically.

降膜吸收过程中，液体的速度、温度和浓度分布基本上是关于摇摆平面对称分布；速度场、温度场和浓度场的变化周期近似等于摇摆周期；摇摆幅度和摇摆频率直接影响降膜吸收的效果，摇摆频率越低或幅度越大，吸收效果越差。

According to the plane cross section assumption, configuration of a rod is expressed as a history of the cross section with arc coordinate. A special solution which stands for equilibrium in straight line state is obtained from differential equilibrium equation. Linear perturbation equation is derived and its general solution is obtained in which the integral constants are determined by constrained conditions at two ends of the rod. The condition of existence of non zero solution of the integral constants gives to the Greenhill formula of exact elastic rod model, which shows that the boundary of stable area is a closed curve and of symmetry, and inference of shearable and extensible to stability of the rod is depend on three factors: difference between flexibility of shear and extension of a section of the rod, bending stiffness and the length of the rod.

基于平面截面假定，弹性杆的位形表达为截面的弧坐标历程，根据平衡微分方程得到了两端受力螺旋作用时的直线平衡特解，导出了线性化扰动方程及其通解，积分常数根据两端铰支时的边界条件确定，并根据其存在非零解的条件得到弹性直杆精确模型的Greenhill公式，表明稳定域为一对称的封闭区域，拉/压和剪切对稳定性的影响取决于：拉/压柔度与剪切柔度之差，抗弯刚度和杆长这三个因素

Symmetry of plane curve is important to function research.

平面曲线的对称性对于函数研究具有重要意义。

Furthermore, for the domain structure and the symmetry of domain boundary of this material, analysis of group theory has been made, and the numbers of orientation states of domains, plane indices of domain boundaries and the types of domain boundaries are in agreement with the orientations and types of domain boundaries in tetragonal phase of BaTiO〓 listed by Fousek.

同时，对这种材料中的畴结构及其畴界对称性进行了群的分析，由此所确定的畴取向态数，畴界面指数以及畴界类型与Fousek等根据弹性相容性条件所列出的钛酸钡四方相中畴界类型和取向完全吻合。

A half of a symmetrical, approximately spherical object as divided by a plane of symmetry.

半球体：一个对称的、近似球体的物体的一半，如被对称面分开者

The lamellae (10) have a resin body and a recess (13) in the inner surface (12), in the plane of symmetry.

薄板(10)在内表面(12)有一个树脂体和一个凹槽(13)，位于对称平面内。

Two flat lateral zones 12, parallel to the plane of symmetry X, each of which located near one end of the concave central area 11

两个平的横向区域12，平行于对称面X，各个横向区域12位于靠近凹入中心区域11一端的地方

The results show that there appear in the existing tunnel differential settlement, and nonuniform lateral displacement and torsion, and they reach their peak values on the plane of symmetry.

计算结果表明，新隧道施工时既有隧道将产生不均匀沉降、不均匀侧移和扭转，且在对称面上出现最大值。

Based on the equivalent circuit model, a method which can calculate coupling coefficient of microstrip resonators by adding the electric-wall and magnetic-wall in the symmetry plane of the coupling structure has been put forward.

通过等效网络的理论分析，提出利用传输系数幅度曲线和相位曲线上的六个奇异点对应的谐振频率计算耦合系数的方法，并用HFSS建立模型，通过全波仿真计算验证了上述方法。

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。