电磁场

The results show that, when the electromagnetic field was applicated, the flowability and filling capacity of cupronickel alloy are increased, the surface cracks are eliminated, and the thin-walled cupronickel tube billets with smooth surface can be obtained due to the increase of flowability and filling capacity of cupronickel alloy. The solidification structure of the tube billets is evidently refined, the shape of Ni-rich phase changes from needle-like to bulk and the casting stress declines from 7.2 to 0.32 MPa. With the structure improving, the tensile strength and elongation increase by 5% and 36%, respectively, than those of ordinary continuously cast tube billets.

结果表明：在连铸过程中施加旋转电磁场能够提高金属液的流动性和充型能力，消除表面裂纹缺陷，从而制备出表面光滑的薄壁白铜管坯；在电磁力的作用下管坯凝固组织显著细化，富镍相由针状转化为团块状，同时铸造应力由未施加电磁场时的7.2 MPa下降至0.32 MPa；随着凝固组织的改善，施加磁场的管坯抗拉强度和伸长率与未施加磁场管坯的相比分别提高5%和36%。

We study the field enhancements in the waveguide structures by doped semiconductor material, and analyze their electromagnetic fields for different structures under the plane wave illumination or the short pulse. We design several doped silicon slots cavity and slot chains with large field enhancement, and describe their physical mechanism.

我们研究掺杂半导体波导结构对兆赫波电磁场增益之影响，使用电磁模拟针对不同结构做探讨，并分析连续波和脉冲波之电磁场变化，设计具有强场增益之掺杂半导体的矽狭缝和矽狭缝链之结构，并探讨其物理机制。

The distortion and stress of carrying current ferromagnetism thin plate in a magnetic field were calculated.

同时进行了载流铁磁性薄板在电磁场中变形和应力的实验研究，介绍了电磁场中铁磁性薄板的实验装置和实验方法，给出了实验数据，并将实验结果与理论计算结果进行了分析对比。

The transient state shielding efficiency of 3 kinds of plate shielding cabins is over 55dB, and that of full plate shielding cabin is the best. Based on the experimental results and the former related research results, the immunity requirements of high voltage test hall electrical equipment, and research suggestions for equipment, personal and test standards are proposed.

结合冲击放电产生的电磁脉冲的特点，分析了设备损坏的原因，对高电压试验大厅设备的脉冲电磁场抗扰度、脉冲电压抗扰度要求和防护要求进行了讨论，指出了现行标准的不足，提出了对脉冲电磁场生物效应进行研究的建议。

Through analyses on the exchange between the space electron kinetic energy and interelectrode electromagnetic field energy, and energy changes of the electromagnetic field on the magnetically insulated transmission line cross-section, the quantitative relationship between the line voltage and current is pressented at the start and end during the formation process of the magnetical insulation without electron loss.

通过分析空间电子与极间电磁场之间的能量交换关系，以及磁绝缘传输线横截面上的电磁场总能量变化，给出了量化无损磁绝缘形成过程始末时刻线电压和线电流关系的电磁模型。

The distribution of magnetic field and magnetic line of force with the finite element method was analyzed. The dynamic equations of moving part were solved coupling with the voltage balance equation. Force, displacement of moving part, current and frequency characteristic were discussed according to the numerical solution. The influence of the clearance volume and leakage was discussed as well.

运用电磁场有限元方法对直线电动机电磁场模型进行求解，分析了电动机内部的磁场和磁力线分布情况；建立了电动机动子动力学模型和驱动电路模型，得到系统的运行方程组并对其求解，根据计算结果对压缩机的驱动力、活塞行程、绕组电流和频率特性等进行了分析，同时就余隙容积和泄漏对这种微小型活塞压缩机的影响进行了探讨。

This paper is focused on a mathematical model of vibrations of magnetic materials under magnetization.

将电磁场理论与弹性力学理论相结合，建立了描述正弦变电磁场中磁性材料振动的数学模型。

In this thesis, two main parts are included, the first focuses on the characteristics of high-resolution spectra of free radicals in magnetic field, the second concentrates on the measurement of electric dipole moment of free radicals by Zeeman and Stark effects simultaneously.

本论文以电磁场中自由基分子的光谱与结构特性研究为中心，主要内容包括两部分，一是针对磁场中自由基分子高分辨光谱的特性研究，另一部分则是同时利用电磁场中自由基分子的Zeeman和Stark效应，对自由基分子的电偶极矩进行直接测量研究。

But using object oriented programming to study Finite Element is a new method to design and construct Finite Element.

本文从计算机科学的角度出发，将电磁场数值分析方法与软件科学相结合，研究了面向对象有限元方法的原理，设计了电磁场数值分析可视化软件系统。

In this outlook of this dissertation, the primary idea is to extend the Helmholtz"s theorem to get the complete projection theorem of electromagnetic fields in vector wave space—the extend of the Helmholtz"s theorem which can be used to study the eigenvalue problem of the vector partial differential operator.

在论文的展望中，将亥姆霍兹定理进行推广，得到了电磁场在矢量波空间的完全射影定理即推广的亥姆霍兹定理，由此可以研究基于矢量偏微分算子的电磁场的本征问题。

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。