上模

Subsequently, on the basis of simplifying the structure and boundary condition, the FEM models of the wheel's felloe rigidity computing, the wheel modal computing and the wheel bending analysis were built separately.

而后在对结构、边界条件简化的基础上，分别建立了车轮轮辋刚度计算、车轮模态计算和车轮弯曲分析有限元模型。

Therefore,the Low Pass Filter is introduced on base of common sliding mode control.The control law can guarantee fast convergence of trajectory tracking error as well as robustness for external disturbances and parameter uncertainties.

在一般滑模控制的基础上引入低通滤波器，则保证了轨迹跟踪误差的快速收敛，同时使系统具有很强的鲁棒性。

Based on the engineering structure, three dimensional finite element model is set up by SAP2000N software and its characteristics is calculated by eigenvectors method.

根据实际结构，在软件SAP2 0 0 0N的基础上建立了三维有限元模型，采用特征向量法，得到了该结构的各阶自振频率和模态的理论值。

In this part,wecombine finite element method and the method of characteristics for concentrationequation.

证明了有界区域上的特征-混合元格式具有最优H1-模误差估计。

A criterion theorem of having no finite coverings for a finitely generated module M over a semisimple ring R is given.

对半单环上有限生成左模给出一个无有限覆盖的判定定理。

It was the same process, though on a much larger scale, that the Phoenix used to go into Firebird mode.

但是，它是相同的程序在非常大的刻度，那一个用来进入金劬鸟模态的凤凰城上。

The blades are modeled as cantilever beams fixed on the disk. The equations of motion of the system are derived. The eigenvectors are obtained by solving the eigenvalues of the system and the localized modes of vibration in mistuned systems are further gotten.

采用固定在轮盘上的悬臂梁模型来模拟叶片，推导了结构系统的运动方程表达式，求解特征值问题获得了结构系统的特征向量，进而得到了失谐结构的局部化的振动模态。

As a flying height actuator, a piezoelectric bender is used in this study to complement an air bearing at the head/disk interface to perform the feedback control in order to decrease flying height variation due to disk vibration and tilt.

因此本研究应用飞行高度控制器结合压电弯片驱动器与滑动器，在飞行高度方向上执行回授控制，用於追随碟片模态与倾斜所造成之碟片高度变化，以维持要求的稳定飞行高度。

The influences of pump energy,focal length and distance between fiber and lens on SBS reflectivity and waveform in multimode fiber are investigated theoretically and experimentally.

从理论和实验上研究了不同焦距下泵浦能量以及透镜与光纤间距对多模光纤中的SBS能量反射率和脉冲波形的影响。

Using the theory of radiation modes and the piezoelectric equation, a Fourier series expansion method is presented to design the PVDF sensors.

该文在声辐射模态理论及一维分布式压电传感器方程基础上，以Fourier级数展开的方法，给出了梁结构PVDF传感器形状与边界条件无关的设计方法。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。