电磁场

Some novel methods are studied in this paper. Firstly, the author studies DGFs in chiral medium avoid us ingwave field decomposition and eigenfunction expansion methods.

一些文献探讨了旋波媒质中电磁场矢量及其DGF的形式，这些文献从各自角度探讨了旋波媒质中依赖于电磁波场本征问题的DGF形式，但都存在局限性。

Using finite difference time domain method, the electromagnetic field distribution of THz wave is simulated in a THz 2D PC splitter and by plane wave expansion method the dispersion relation and defect modes are achieved in a THz rotated PC waveguide.5. A woodpile three-dimensional (3D) PC with face-centered-tetragonal symmetry is one of the most popular 3D PCs because of its favorable band gap characteristics. Based on the woodpile fct lattice structure, we propose a novel woodpile THz lattice structure with comparatively decreased symmetry, better band gap properties and easy fabrication by varying some structure parameters.

计算结果为利用非线性光学差频方法产生THz辐射源的实验研究提供了深入和全面的理论基础；四、利用平面波展开法，通过改变二维THz光子晶体的结构参数，对二维THz光子晶体完全带隙进行了优化，分析出两种适合工作在THz波段的二维光子晶体结构；采用时域有限差分法和平面波展开法，计算出THz波在二维光子晶体"T"型分束波导，45度旋转波导中传输的电磁场分布以及缺陷模；五、Woodpile面心立方四角结构是三维光子晶体中被研究最广泛的结构之一。

The conformal flat space-time solutions in electromagnetic and scalar theory are shown,and the indefiniteness of the plane-symmetric solutions and the method for defining a noncontinuous field by the intersection of multi-solutions are demonstrated.

文摘：给出电磁场和标量场在共形平直时空中的解，发现了平面对称解的不确定性及由多重解的交集来定义一个非连续场的方法。

This system has been developed to include three progressive levels of EMF protection so as to minimize discomfort or detoxification.

该系统已经开发出来，包括三个层次的逐步电磁场的保护，以便尽量减少不适或戒毒。

Pulse electromagnetic field deviser was designed and made by the Department of Electric Machine, Naval University of Engineering.

脉冲电磁场发生器由海军工程大学电机系设计与制造。

Circuit principles, analogue circuit, digit circuit which laid me a solid foundation of circuit for the study of communication; the study of electronic circuit of communication provided me with the working principles of analog communication system; the study on communication theory made me grasp the working methods of digital communication; the study on electromagnetic field, electromagnetic wave and aerial let me know that how signals travel through signal paths and how to apply signal and linear system, random signal and system to the research of noise's impact on signals

学习了电路原理、模拟电路、数字电路打下了学习通信的电路基础；学习了通信电子线路掌握了模拟通信系统的工作原理；学习了通信原理掌握了数字通信的工作方法；学习了电磁场与电磁波、微波与天线了解了信号如何在信道中传输；学习了信号与线性系统和随机信号与系统来研究噪声对信号的影响。

It is possible to measure theelectric field strength by connecting a dipole antennato the input connector.

是有可能的措施，电磁场的强度由连接偶极子天线，以输入连接器。

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To realize temperature real-time control in microwave heat treatment, this paper presents a new type of thermal dosimeter on hyperthermia.

为实现肿瘤微波热疗过程中温度数据的实时监控以及测温曲线的显示，研制了肿瘤热疗热剂量仪，可在强电磁场中配合各种频段的微波热疗治癌机使用。

Irradiation method, irradiation intensity and dosimetry have always been important factors to be considered serio...

辐照方式，辐照强度和剂量一直是电磁场的生物学效应实验中需要认真考虑的重要因素。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。