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By spectral analysis of the system, we find that 0 is the uniquespectral point of system on the imaginary axis.

同时通过研究系统算子的特征,证明了系统算子的点均位于复平面的左半平面且虚轴上除0外无,进而得到系统的渐近稳定性,特别在范数意义下系统的动态解收敛到稳态解。

The results of CFTanalysis of experimental CER spectra presented an indirect proof of the dynamics model.

实验研究了SIN+GaAs结构CER及其CFT,由CFT中四个特征频率随调制电压的变化关系间接地证明了理论模型的正确性。

In this method, the equivalent elastic and elastic-plastic response spectra are ensured considering of structural inelasticity, the explicit expression of response spectra including Newmark-Hall deformation reduction factors is achieved.

该方法首先考虑结构的非弹性反应确定等效弹性反应和弹塑性反应,并建立了使用Newmark-Hall变形折减系数的能力的明确表达式。

The modified expression of the broad emission-line profiles ire derived for the outflow kinematics model of the BLR driven by the radiation pressure. Taking into account the difference between the two lines HeI λ5876 and Hβ, it is shown the fact that the observed line width of HeIλ 5876 is broader than that of Hβ cannot be explained by the popular outflow BLR model evoked by W. G. Mathews. For comparison, line profiles of the gravitational infall model and orbital disk model are also calculated; the later is in good agreement with the observations Thereupon, conclusion is reached that the gravitational infall is an important process in the real BLR gas motion.

1推导了辐射压加速宽线云团径向外流,以及引力下落和转动等BLR运动学模型的线轮廓表达式,并考虑到光致电离计算表明的云团本身对Hβ和HeIλ5876线的辐射差异,用数值方法计算了它们的线轮廓,发现普遍流行的辐射加速气体外流模型不能解释HeIλ5876线宽大于Hβ线宽的观测事实,而引力下落模型则可以较好地解释观测,因此我们倾向于认为、径向内流运动很可能是BLR内的发射线云团真实运动的一个重要成分。

A series of theoretical and experimental studies on the microstrip patch antennas with dielectric superstrates is carried out systematically. Firstly, a comprehensive survey of the microstrip antenna technology and its theories are presented. Then, two analysis techniques, named as the spectral domain Green's function method and the spectral domain integral equation method are developed. The SDGF method is a simplified analysis technique, which takes advantage of the spectral domain immittance approach to find the dyadic Green's function for the stratified media, and obtains the complete closed-form formulas for radiation patterns, directivity, efficiency, gain etc. Some interesting calculated results are presented. The SDIE method is capable of determining resonant frequency, radiation characteristics, input impedance etc, for the covered microstrip patch antennas. Comparing with other full-wave analyses it reduced computation and mathematical labour remarkably. The singularities near the pole location of the surface-wave modes and the difficulty of the integral computation over infinite range of oscillating integrands are dealt with actively and documented well. Results predicted by the SDIE method agree extremely well with our experimental results for resonant frequencies of various superstrates. The superstrate effects on impedance and radiation characteristics also have been investigated experimentally so that the gap due to lack of measured data and computed results for multi-layered superstrate has been filled to some degrees and two useful observations have been achieved for weakening the resonant frequency shift and optimizing the microstrip antenna gain. As a meaningful application, the design and analysis of a 4×4 patch array are introduced.

实用微带天线普遍加介质覆盖层来防护热,物理损伤和环境影响,也可能在飞行或严酷气候条件下自然形成覆盖层本论文对带介质覆盖层的微带贴片天线系统地作了一系列理论和实验研究首先,对微带天线技术和理论作了全面的综述然后,发展了两种分析方法,称为域格林函数法和域积分方程法SDGF法是一种简化的分析技术,它利用域导抗法来求得分层媒质的并矢格林函数,并得出方向图、方向性系数、增益等参数的完整的闭式公式,给出了一些令人感兴趣的计算结果SDIE法能确定介质覆盖微带天线的谐振频率、辐射特性和输入阻抗等与其它全波分析方法相比,它明显减小了计算量和数学工作量已有效地处理了表面波模极点附近的奇异性和对振荡的被积函数的无限区间积分计算的困难对于不同覆盖层情况下的谐振频率,由SDIE法所预示的结果与我们的实验结果吻合得很好对于覆盖层对阻抗和辐射特性的影响也已作了实验研究这在某种程度上填补了缺少实验数据和计算结果之间的间隙,并得出了缓解谐振频率偏移和优化天线增益的两点有用的结论作为有意义的应用,介绍了一个4×4元矩形贴片天线阵的设计和分析。

Distinction instillment different concentration antigen.

分别滴加不同浓度的抗原使其发生反应,测量傅里叶变换红外和加入抗体前后反射的变化,结果表明硅烷化效果明显,生物抗原较好的固定,抗原抗体反应前后反射有明显的红移,且红移量于滴加抗原浓度增加而增加,并且呈现出良好的非线性关系。

This paper considers weighted estimate s of polynomial operator spectra by using the methods of integral,Rayleigh theorem and Schwartz inequality and establishes the inequality of upper bound of the(n+1) spectrum by depending on the former n spectra and the estimated coefficient is independent of the measure of the domain.

考虑多项式算子的带权估计,利用分部积分、Rayleigh定理、Schwartz不等式等方法,建立了用前n个来估计第n+1个的上界的不等式,且其估计系数与区域度量无关。

Though the excitation spectrum got by inverse LPC filtering is flatter than the original spectrum, it contains many important fine characteristics.

经LPC逆滤波后的激励虽然比原始平坦,但仍包含许多重要的精细特征。

To clarify the effect of defects in luminescence, the PL spectra were measured at 10K for the implanted samples after isochronal annealing from 300℃ to 1200℃.

系统研究了高纯N〓气氛和氧化性气氛中高温退火后样品PL的演变,观察到在N〓下等温退火后PL的轻微蓝移,变温退火后PL的明显红移,以及在氧化性气氛下,等温和等时退火后发光峰的往复位移。

Based on the speciality of the spectral function, we provide the sufficient conditions such that the spectral function are K—increasing (strictly K—increasing) in Euclidean Jordan algebra, and establish the relationship between the spectral scalar solution set and the K— efficient solution set of the Euclidean Jordan algebra vector optimization problem.

基于函数的特殊性,刻画了标量函数满足K-增性的充分条件,继而建立了标量解集与欧几里德若当代数向量优化问题K-弱有效解集和K-有效解集的包含关系。

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推荐网络例句

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发,分析对称连杆曲线上鲍尔点的产生条件,提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品,年生产总值3000万美元,产品价廉物美、选料上乘、质量保证,深受国内外客户的青睐

The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.

血精的原因很,以良性病变为主。