极点

Based on two algebra Riccati equation method especially the structure of the system Hamilton matrix and system observability theory, the role of invariant zeros in constructing system reduced order controllers was given. That is, by the suitable selection of free parameters of the system H(subscript ∞) controller, some points which were symmetry with the unstable invariant zeros about the imaginary axis became the stable poles of the system controller which were not observable and could be reduced from the system, thus could get further reduced order controller.

基于2代数黎卡提方程方法，特别是系统Hamilton矩阵的结构特点和系统可观测性理论，论述了不变零点在构造系统降阶控制器中所起的作用，即通过选择控制器的自由参量，使某些不稳定的不变零点关于虚轴对称的点构成系统控制器不可观的稳定极点，从而实现了控制器进一步降阶。

Unifying with the distribution of polarized light,the role of maximal polarization line and imaginary pole point in navigation are analyzed in detail.

结合天空偏振光的分布情况，并详细地分析了天极点和最大偏振线在导航中所起的作用。

Theoretical analysis and experimental results show that the distribution of polarized light has two symmetrical lines:the maximal polarization line and solar meridian,and the patterns appear to rotate with the speed of 15°/h around the imaginary pole point.

理论分析与实验结果表明，天空偏振光分布对称于最大偏振线和太阳子午线，并且以15°/h的速度绕天极点旋转。

She was excellently, imperturbably good; affectionate , docile, obedient, and much addicted to speaking the truth

她绝对善良，脾气也好到了极点；温柔、谦和、恭顺一贯爱说真话。

She was excellently, imperturbably good; affectionate, docile, obedient, and much addicted to

她绝对善良，脾气也好到了极点；温柔、谦和、恭顺一贯爱说真话。

Applying this new theorem, one can easily find the auxiliary function and solve many problems of Cauchy's principal values of improper integral as well, the original theorem being unable to do so.

由于这个条件的限制，在寻找辅助函数时往往碰到困难，甚至找不到在实轴上只有一阶极点的辅助函数。

A generalized self tuning hydraulic control method with pole location is presented inconsideration of the intrinsie characteristic of a hydraulic servo system and the problem with the hydriliccontrol .

针对液压伺服系统固有的特性和液压控制中存在的问题，提出了一种具有极点配置的广义自校正压力控制方法。

This is inexcusable. I'm shocked to my very core.

这真是不可原谅，我真是震惊到了极点

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，称为谱域格林函数法和谱域积分方程法SDGF法是一种简化的分析技术，它利用谱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。

The insipidity and yet the noise; the nothingness and yet the self-importance of all these people!

既枯燥乏味，又吵闹不堪，无聊到了极点。这批人又一个个都自以为了不起！

The reasons of iron ions content overproof in grade Ⅱ desalting water system,such as variation water quality,contamination of regenerant , operation adjustment of pretreatment system and switching operation of bed were discussed.

对二级脱盐水系统中铁离子含量超标的原因，如来水水质发生波动、再生剂受到污染、预处理系统操作调整、床体运行切换等进行了论述。

You were hired to drum up new business, so go and do it.

公司雇你招徕新业务，你就做你的事好了。