模态的

First, the modal perturbation method based on Ritz vectors is applied to solve the dynamic characteristics of Timoshenko deep beam including the effects of shear deformation and rotational inertia.

首先建立了钢筋混凝土深梁的求解方程，然后提出了求解Timoshenko梁特征值问题的模态摄动法，最后通过算例，说明不同含钢率下钢筋混凝土深梁的自振特性的变化情况。

They are modal arguments, epistemological arguments, and semantical arguments. It is wrong to doubt the three types of the arguments.

克里普克为了证明传统的名称摹状词理论的错误给出了三大论证，即模态论证、认识论的论证和语义学的论证。

In this paper,about the body of a special ultra-heavy semitrailer without beam,its model is built in ProE sofeware and its static analysis and modal analysis,which is in static state ,constant speed traction state and braking state, are performed in Ansys software.Displacement distribution,stress distrbution,the first five inherence frequencies and vibration modals are educed.

本文针对超重型特种无梁半挂罐车的罐体，用ProE软件建立起模型，用Ansys软件进行罐体在静载工况，匀速牵引工况及制动工况时的静态分析和模态分析，得出罐体在各种工况下的位移分布，应力分布及前五阶自振频率和振型，以验证该罐体设计的合理性。

The left singular vector of the projection has been tracked by the projection approximation subspace tracking algorithm. Then the modal parameters are obtained by least square method. At last an experiment is made using a cantilever beam to prove the efficiency and stability of the method by changing the frequency band of the exciting signal.

通过子空间跟踪算法，不断跟踪计算投影的左奇异值向量，再利用最小二乘法求出系统的模态参数，最后用悬臂梁作为实验模型，通过不断改变系统激励的频带范围，验证方法的有效性及稳定性。

The obvious difference in the characteristics of AASW and SAMW may result in the formation of the Subantarctic Front.

在PF1以北，向北输送的南极表层水开始辐聚下沉，在下沉并北移的过程中与亚南极模态水相遇，SAMW与AASW之间温盐特征的巨大差异可能是导致亚南极锋形成的主要原因。

Because the portal frame is also used in the rig for bogie fatigue strength testing, in which the imposed load is harmonic, the modal analysis is necessary. The fundamental vibration mode shapes and corresponding frequencies are calculated to validating that the natural frequencies of the structure have enough difference comparing to the load frequency, so sympathetic vibration can be avoided.

由于龙门架还要在疲劳试验台中用来进行转向架的疲劳试验，因此对龙门架进行了模态分析，计算龙门架结构的固有频率和振型，确保龙门架的固有频率远离转向架疲劳试验的加载频率，避免在试验中发生共振。

Afterward, vibration equations of bundle conductors system which consider the effects of spacer dampers are derived(including transcendental function and plural), the vibration frequencies and modes of bundle conductors system are got by solving the transcendental eigenvalues of these equations. Then the amplitude ratio of each spacer dampers to sub-conductors are got, so bundle conductors can be exactly solved with the application of energy balance method as single-conductor.

然后，推导出了考虑阻尼间隔棒阻抗影响的分裂导线体系的振动方程组，通过求解超越特征值得到分裂导线的振动频率和模态，得到各间隔棒、各段子导线的振幅比，从而使分裂导线可以象单导线一样应用能量平衡法进行精细求解。

Then it uses beam unit to analyze and calculate the simplified tripper steel structure model,compares the pre and post optimization models stress,displacem...

然后利用梁单元对简化的空间尾车钢结构模型进行有限元静力和模态分析计算，对优化前后2种模型的应力、位移、重量及基频进行了比较，从而进一步验证了对尾车钢结构进行拓朴优化的可行性和优化结果的合理性。

On the basis of the presented hydroelastic theory, a computer code HEAF (Hydroelastic Analysis Program for Fast Sea Transportations) is developed to calculate wave loads and dynamic responses of mono-or multi-hull high speed vessels in the frequency and time domain.

在理论研究的基础上，本文作者开发了计算机应用程序HEAF(Hydroelastic Analysis Programfor Fast Sea Transportations)，通过与结构干模态分析程序的数据接口，能够进行线性频域和非线性时域单体或多体高速船舶水弹性分析，可用以计算单体或多体高速船在各种海况下的波浪载荷、船体刚体运动和结构的弹性动力响应。

Apparent multimodality of the distribution, or lack of it, is often an artifact of the size and nature of the area mapped

明显的多模态分布的存在或不存在，往往是一种因编图区大小与性质的关系搞成的人为产物。

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。