模态

The basicflows are computed by a low-dimensional Galerkin method.The results confirm thattwo times global mode switching occur with increasing Re up to which the Hopf bifur-cation occurs when the absolutely unstable region cover the whole reversed flow region,and the first explanation of this phenomenon with absolute/convective instability theoryis given.

结果证实了只有当绝对不稳定性区域完全覆盖了回流区才会形成整体的Hopf分叉，此前随着Re数的增加整体模态经历了两次跳跃；并首次用绝对/对流不稳定性理论解释了这一现象。

The design is changed to a series of scalar quantity design problems, and the amount of calculation and the computational complexity are reduced.

对模型进行模态分析，采用独立模态控制法，把原问题进一步降维，成为一系列标量微分方程的优化设计问题。

This paper mainly focused on some basic research as follows:(1) ANSYS finite element calculation software and the APDL design language were used to set up two model structures—the reinforced concrete floor model and the prestressed space composite trass model.

本文就该结构做了以下几点基础性研究工作：(1)利用ANSYS有限元分析软件和APDL参数设计语言建立了两个模型：钢筋混凝土楼板模型和预应力空间组合结构模型，对楼板模型和预应力空间组合结构模型分别进行了非线性静力分析，模态分析和竖向动力荷载下的非线性瞬态分析，并对两种结构的力学行为做了比较，得到了一些初步结论。

The end result is a 1.8 micron diameter disk with a QD density of 50 QDs/ m2 and a quality factor exceeding 15000 before the system lases.

NIST的Glenn Solomon指出，这是科学家首度见证单一量子点能态做为雷射操作模态的效应。

Regarding a tractive elevator as example, according to the drawing and measurement of its parts, and computing with Ansys, its dynamic parameters are obtained, which are used in analysis of horizontal direction vibration with Matlab.

第五章，在电梯数值计算模块的基础上，开发了电梯动态特性仿真平台，并用来进行电梯各种工况下模态分析、谐响应分析、瞬态动力学响应分析。

To study how the air and sea interact with each other during El Nio/La Nia onsets, extended associate pattern analysis is adopted with the simple ocean data assimilation data.

为研究在厄尔尼诺现象演变过程中海气相互作用的性态特征，该文再次应用拓展伴随模态分析于简易海洋同化数据。

This thesis is based on crane dynamic theory and finite element theory, and utilized software platform of ANSYS. It realizes model analysis and transient analysis of steel rope and bridge structure. The data and conclusion offered effective method to bridge crane design. The thesis mainly includes:According to crane dynamic theory, established relevant dynamic model, and analyzed the dynamic properties of the bridge structure of the bridge crane, including the natural frequency, the model shape and the dynamic stress. A way to analyse the dynamic response of the bridge structure of the bridge crane which takes into account the dynamic properties of the steel rope pulley block has been explored successfully.

本文基于有限元理论和起重机动力学理论，以有限元分析软件ANSYS为平台，实现了计算机对钢丝绳系统和桥架的模态分析和瞬态动力学分析，得到的分析数据和结论对桥式起重机动态设计提供了有效的手段，论文主要内容包括：根据起重机动力学理论，建立了相关动力学模型，并对桥架结构进行动态性能分析(包括固有频率、振型以及动应力)的分析，探索出一种考虑钢丝绳滑轮组的动态特性在内的桥式起重机桥架结构动态应力分析的方法。

The thesis mainly includes: According to crane dynamic theory, established relevant dynamic model, and analyzed the dynamic properties of the bridge structure of the bridge crane, including the natural frequency, the model shape and the dynamic stress. A way to analyse the dynamic response of the bridge structure of the bridge crane which takes into account the dynamic properties of the steel rope pulley block has been explored successfully.

本文基于有限元理论和起重机动力学理论，以有限元分析软件ANSYS为平台，实现了计算机对钢丝绳系统和桥架的模态分析和瞬态动力学分析，得到的分析数据和结论对桥式起重机动态设计提供了有效的手段，论文主要内容包括：根据起重机动力学理论，建立了相关动力学模型，并对桥架结构进行动态性能分析（包括固有频率、振型以及动应力）的分析，探索出一种考虑钢丝绳滑轮组的动态特性在内的桥式起重机桥架结构动态应力分析的方法。

Moreover the vibration frequencies of the plate are comput-ed using iterative method, which begins with the in vacuo eigenfrequency and continues until in-water eigenfrequency con-verges.

从真空中模态特征频率出发用迭代法直到水中频率收敛为止而得到水中方板的特征频率，进而计算了方板的棤态辐射效率。

The steady state of CDR converter is analyzed. The equivalent circuits and corresponding formulas are proposed in each mode of overall 12 modes.

对倍流整流的全桥移相变换器作了稳态分析，给出了12个运行模态的等效电路和电压电流公式。

By using competitive adsorption of activated carbom to remove unfavorable influence of carbon in carbonaceous gold concentrate on leaching process, the leaching rate of gold concentrate can be improved to 88% as compared with 10%by direct cyanidation.

本文论述了利用活性炭竞争吸附作用，消除含炭金精矿中炭在浸出过程中的影响，使金精矿的浸出率可由直接氰化的10％提高到88％。

The only thing you're ever gonna be king of is King of the Stupids!

你只配做傻瓜的国王！