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The static natural frequencies and dynamic frequencies (under 3000rpm) are calculated by the finite element method and cyclic symmetry technique. The rotating vibration behaviors of the two models are compared. Different vibration characteristics between the two models are discussed. Geometry mismatch in a turbine blade root, which arose in manufacturing process or caused by wearing out during service, leads to contact conditions changed in fir-tree attachments. As a result, shifting of the fundamental frequencies and redistribution of stress in the blade base possibly cause failure of the blade.

在叶片—轮盘耦合系统振动研究方面，建立了带围带的叶片振动计算模型和带围带的叶片—轮盘耦合系统振动计算模型，考虑旋转离心力作用，采用波传播技术，对两种模型分别进行了整圈模态分析，得到了某汽轮机叶片模型和叶片—轮盘耦合模型在0转速和工作转速(3000rpm)下的振动模态，并对所得结果进行分析比较，讨论了整圈叶片振动模态与叶片—轮盘耦合振动模态的区别。

By decomposing the cyclotomic polynomial over a finite field, wegive the distribution of linear complexity for periodic sequences over the field, with some special cases discussed.

肖国镇 ，许春香，魏仕民通过对有限域上分圆多项式的分解，给出周期序列的线性复杂度的分布，并就几种特殊情况进行了讨论。

The finite element analysis model of cylinder and vessel head structures was established.

建立了高压容器筒体与封头结构的有限元分析模型。

Finite element pretreatment of the cylinder head has been done by adopting the Pro-Processing module of the software.

利用功能强大的分析软件I-DEAS，建立了一个可以准确分析CY4102BZQ柴油机缸盖的数学模型。

By the general method and the finite element analysis, the distributing situation of the stress gradient on the oil cylinder has been gained.

采用常规方法和有限元分析，确定油缸上应力梯度的分布情况。

This paper studies on the impression cylinder of J2108 offset press. With finite element method, deflection character of cylinder is achieved in static and dynamic load. Active-compensation to improve flexing-change of cylinder is bring forward, and its compensation character is simulated.

本文以J2108型胶印机压印滚筒为研究对象，通过有限元分析获得滚筒动静态挠曲特性，提出用主动补偿方法改善滚筒挠曲变形，并仿真分析了补偿特性。

At the time of some modeling in structure, according to the characteristic of the rotating shell, the article adopt finite strip method to analyse to the shell, and discretes the rotating shell along the axis to a series of cylindrical shell to set up mold of curved surface ,not only guarantee to calculate the precision as well as raise the efficiency, but can deal with more complicated structure.

在结构部分建模时，根据旋转壳体的特点，对壳体采用有限条法进行分析，将旋转壳沿轴向离散成一系列的锥状或柱状条，对结构旋转曲面进行建模，既保证计算精度又能提高效率，而且可以处理比较复杂的组合结构。

Then, for the first time, a finite element model of the cylindrical shell surface was bring forward and set up.

首次提出和建立了柱体坐标系下的曲面柱壳单元有限元模型，以及在柱坐标系下的边界元法基本方程和柱坐标系下无限域与半无限域基本解。

To investigate the dispersive character of cylindrical Rayleigh wave, a finite element model is developed to simulate laser inducing cylindrical Rayleigh waves on the surface of an isotropic cylinder.

为了研究柱面上激光激发的瑞利波的色散特性，建立了激光在各向同性圆柱表面激发瑞利波的有限元模型。

According to the structural feature of parallel single disk gate valve,the strength and rigidity of body will be calculated with finite element method,and with cylindroid shell theory .

根据主闸阀结构特点，分别用有限元法和椭圆柱板壳理论公式计算了阀体的强度与刚度，并进行了分析对比，同时对闸板的刚度进行了校核。

The production moved off-Broadway to New York City, where she won the Joseph E. Calloway award for her performance, and was profiled in American Theater Magazine as one of ten young theater artists to watch.

生产提出过百老汇的新的纽约市，在那里她赢得了约瑟夫calloway奖，她的表现，并于异型在美国的战区杂志之一， 10战区的青年艺术家观赏。

It's a risk tradeoff, and I believe that adding test support code usually wins.

这是一个风险的权衡，我相信添加测试代码通常会占上风。