查询词典 pole-vaulting

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 nurse hung bags of clear, innocent-looking liquid from an IV pole, found a plump vein along my right arm ?

护士在静脉输液架上挂上澄清的看似普通的输液包，在我的右手臂找到饱满的血管？

The nurse hung bags of clear, innocent-looking liquid from an IV pole, found a plump vein along my right arm — and the fog slowly lifted.

护士在静脉输液架上挂上澄清的看似普通的输液包，在我的右手臂找到饱满的血管—然后，我慢慢清醒了。

It is due to PID controller parameters are not designed well. The design method of inverter instantaneous voltage PID controller based on pole-assignment is proposed for the first time in this paper.

针对逆变器电压单环PID控制系统性能不很理想的原因进行了分析，指出其原因是PID控制器参数设计方法欠佳。

The design method of PID controller based on pole-assignment is proposed in this paper. The simulations indicate that this PID controlled inverter provides nice characteristics. A method of PI controller combined with instantaneous differential voltage is also proposed, which is equivalent to PID control in essence and can be seen as a simplified dual-loop form. Accordingly it is a simple but effective adjustment.

本文研究了基于极点配置的PID控制器的设计方法，仿真结果显示这种PID控制器性能优越，同时还提出一种PI调节器结合电压微分反馈的调节方式，并指出这种调节方式和PID调节其实是等效的，而且是一种简化的双环形式，因此是一种简单而有效的调节方式。

The stage dialogue of film is a more absurd pole, the role lacks a complete character characteristic, wasing hading no by actor the talent deduce, whole became to show off intemperately.

影片的台词更是荒谬之极，角色缺乏完整的个性特征，经演员毫无天分的演绎，全成了过火的卖弄。

The electrochemical properties of the corrosion of 430 ferrite stainless steel with different RE contents in the 3.5wt% NaC1 solution were studied by means of EIS (electrochemistry impedance spectroscopy). And the characteristics of textural component were quantitatively analyzed by the orientation distribution functions and inverse pole figure.

通过电化学阻抗谱研究了不同稀土含量430铁素体不锈钢在质量分数为3.5%中性氯化钠溶液中的腐蚀电化学特征，通过ODF分析和反极图定量计算研究了含稀土430铁素体不锈钢中织构组分特征。

The experiment results of Al-Mg-Sc-Zr alloy plate show that the precision of H-M inverse pole figure calculated by LG method has the obvious superiority over other current approximated methods.

Al-Mg-Sc-Zr合金板材反极图测算实验结果表明，由LG法所测算的H-M反极图精度显著地高于各种现行的近似方法。

Al-Mg-Sc alloy ; bancake-grain structure ; inverse pole figure ; texture ; planar anisotropy

铝-镁-钪合金；反极图；煎饼状晶粒结构；织构；平面各向异性

The Laplace Transform; The Region of Convergence for Laplace Transforms; The Inverse Laplace Transform; Geometric Evaluation of the Fourier Transform from the Pole-Zero Plot; Properties of the Laplace Transform; Analysis and Characterization of LTI Systems Using the Laplace Transform; System Function

教学内容：拉普拉斯变换；拉普拉斯变换收敛域；拉普拉斯反变换；由零极点图对傅立叶变换进行几何求值；拉普拉斯变换性质；常用拉普拉斯变换对；用拉普拉斯变换分析和表征线性时不变系统；系统函数的代数属性与方框图表示；单边拉普拉斯变换。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。