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The characteristics of the MHD structure observed in the soft x-ray tomography are as follows. It is constructed with m=2 mode oscillation, so that the magnetic surface is made up of two islands. The structure of the magnetic surface is relatively stable. It rotates in the direction of the electron dia-magnetic drift, and the rotation frequency is the half of the oscillation frequency of soft x-ray signals.

通过SX反演图象分析,MHD型磁面结构的特点:一是m=2模的振荡构成,因而此磁面始终有两个岛组成;二是磁面结构相当稳定,在MHD放电过程中没有明显变化;三是磁面结构整体沿电子逆磁方向极向旋转,旋转的频率是软X射线测量的信号频率的一半。

Figure 3 shows the frequency response function determined by the help of a modal analysis based on the impact hammer method.

图3显示频率响应函数确定的帮助下模态分析的基础上,冲击锤的方法。

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。

Moreover, the semiopen mapping theorem, the semiclosed graph theorem and the semibounded inverse theorem are established under some conditions of weaker t-norms.

对MengerPN空间上的线性算子引入β-半有界,β-半开及β-半闭等概念,讨论了它们间的关系,并在较弱的t-模条件下建立了半开射定理,半闭图定理和半有界逆定理。

During West End Games' run, they costumed several other characters in the armor: Tatooine Manhunt, an adventure module published in 1987, introduced Jodo Kast.

西方终点出品的桌面游戏中,另有几个角色也穿戴曼达洛盔甲。1987年的冒险模组《塔图因追捕》介绍了乔多·卡斯特。

Focused on a resonance-grounded power system,a new method of selecting faulted line based on multifractal spectrum of the zero-sequence current is presented.

系统阐述了多重分形和多重分形谱的小波局部极大模计算方法,提出了利用多重分形谱对线路的零序电流进行分析,根据谱图进行判断故障线路的新方法。

This paper is designed Pull rod injection mould , discussed the basal principle injection mould, especially Double-surface injection mold design , Have introduced the molding handicraft injecting a mould detailedly、equipment Selection、 feed system、Pulling mechanism and molding part design process, As well as demanded an explanation for mold manufacturing technology, Finally draw out the mould picture by CAD software.

本模具毕业设计主要是设计塑料拔杆的注射模具,论述了注射成型的基本原理,主要是了解模具结构中最基本的两板模的设计,熟悉和掌握模具设计的过程,加深对塑料模具的结构和成型过程的认识。详细介绍了注射模具的成型工艺及设备选择、浇注系统、抽芯机构和成型零部件的设计过程,并对模具制造工艺要求做了说明,最后通过CAD软件绘制出模具图。

The modified neighborhood field average filter,modified median filter and mode filter are analyzed,and a new practical method,which combines multilook average and nonlinear filter to reduce noise in the wrapped phase map,is presented.At the end of this paper,the characteristics of these approaches are compared and the experimental results by processing ERS-1/2 data are used to confirm that the method is more effective in suppressing noise in the interferogram of INSAR.

在比较条件邻域平均、模糊中值滤波和模数滤波3种非线性噪声抑制方法的基础上,提出了一种结合多视平均和非线性滤波的干涉相位图噪声抑制实现方法,并用ERS-1/2数据的实际处理结果验证了方法的有效性。

For plates with same thickness and material constants but different aspect ratios, we have studied how the distance from the nodal line of the first bending mode to plate center and the size of transducer affect the depths and locations of the first dips in mid frequency ranges of the plates' SPL spectra.

讨论在振动板厚度、材料常数固定不变的情形下,藉由改变振动板长?i比及激振器尺寸,来找出第一个弯曲模态图中节线到振动板中心距离与中音谷声压落差值、位置之间的关系。

In order to solve the problem,a novel algorithm for pattern synthesis is presented by minimizing the norm of the weight vector under constraints of the mainlode-sidelobe-ratio,mainlobe width,flat mainlobe or interference nulling.

该算法以空域匹配权模值最小为目标函数,以主副比、3 dB宽度、主瓣平顶或干扰陷零等为约束条件,优化出最优权,在保证方向图形状的同时兼顾了阵列效率。

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He knows that he's one of the mostdominant players in the NBA right now.

我知道他现在是联盟里最有统治力的球员之一了。

Using analysis method of BCG , the dissertation analyzed the management of voluntary service organizations .

利用BCG分析方法对我国的志愿服务组织管理进行了分析。

A caret is a mark place below a line to show where something should be put in .

脱字符是加在一行文字下面的符号,表示此处应加入一些东西。