查询词典 electromagnetic wave

The full space calculation model, which suits for the asymmetric structure sometimes even including air below the surface of medium, can enable simulative result to approach real one. The FDTD algorithm based on the mixed ABCs is proper to calculate the transmission line where the electromagnetic wave is transmitted in order to send electromagnetic energy along central conductor. The calculation efficiency will be raised if the PML absorbing boundary condition is set on both planes of transmitting direction and so is the MUR two-order absorbing boundary condition in the other planes.

全空间计算模型是适合所有的不对称结构的待研究体的，而且包括了介质下面的空气部分，使仿真更加的接近实验真实情况；基于MUR-PML混合吸收边界条件的时域有限差分法非常适合计算传输线这种结构，因为传输线是传送电磁波的，电磁能量主要是沿着中心导带行进，因此在两个传输端面上设置PML完全匹配层吸收边界条件，在其他面上设置MUR二阶吸收边界条件，会大大提高计算效率，而且计算结果与XFDTD仿真软件计算结果相比较，基本趋于一致。

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。

The on-line density measurement technology with microwave has been narrated as a key part. We has deduced relations between permittivity、the load Q-factor and resonant frequency. And the electromagnetic field for closed cavity 、open cavity has been analyzed. we also discuss the design of cavity that is used in experiment、means for how to stir electromagnetic wave and choice of diameter/length ratio for cavity.

接着重点说明了微波在线密度测量原理，基于麦克斯韦方程组深入推导了微扰情况下介电常数与谐振频率，有载品质因数的关系；分别讨论了封闭谐振腔和开孔谐振腔中的电磁场以及微扰方法中所使用的谐振腔的设计及设计中激励方式、腔长/半径的选择等若干关键问题。

One of the major contributions of Maxwellian theory was that it set up an essential relation between the electromagnetic field and light in vacuum, and defined the speed of electromagnetic wave as the constant speed of light c , which implies a hypothesis that the rest mass of the photon should be zero exactly.

麦克斯韦电磁理论的一个重要贡献在于它将真空中的电磁场与光联系起来，并将电磁场的传播速度定义为真空的属性，即恒定的光速 c ，因而建立了电磁波与光之间的本质联系。

In the method, the orbit of targets and the radar coordinates and parameters are put to calculate attitude and dynamic parameters of targets in line of sight. And then the dynamic data are generated according to the electromagnetic modulation model of the movement of targets including motion at high speed, spin, precession on electromagnetic wave.

该方法首先确定目标的轨道和雷达的布站坐标及工作模式，而后计算目标在雷达观测视线(line of sight， LOS)方向上的姿态和运动参数，最后根据空间目标高速运动、自旋、进动等在电磁波上调制的数学模型生成动态测量数据。

The results are in good agreement with the experimental results.(2) According to the obtained relation between electromagnetic wave and incident stress wave and the resolution of the transmitted coefficients in the joint,the strength variation of the EME before and after the joint when the normal incident stress wave propagates to the linear deformative joint has been presented.

2依据所得到的电磁波与入射应力波之间的关系及应力波在节理面处的透射解，获得垂直入射应力波作用下产生的电磁波在线性变形节理面前后的强度关系。

With the ray technique, the change of properties of electromagnetic wave when it thrilling through insulator are studied. Some useful engineering calculational formulae to evaluate the electromagnetic characteristics parameter of fiberglas laminates are fully listed.

运用电磁波射线追踪技术详细地研究了电磁波透过绝缘介质后的电磁特性变化情况，完整地给出了玻璃纤维或石英纤维层板和夹心结构电磁特性参数（电磁波透过系数、反射系数、插入相位移等）的工程计算方法。

The SERR Summer Clothing is mainly used to prevent the hurt and harm to human body caused by electromagnetic wave from electromagnetic radiations.

主要适用于有电磁辐射的环境和产生电磁波、产生的电磁波对人体造成的伤害。

The SERR Maternity Clothing is mainly used to prevent the hurt and harm to human body caused by electromagnetic wave from electromagnetic radiations.

主要适用于有电磁辐射的环境和产生电磁波、产生的电磁波对人体造成的伤害。

Using finite-element method the effects of long objects, such as cage, train and metal pit prop, on electromagnetic wave cutoff frequency is researched systematically in regular tunnels, and it is shown that the long metal objects lower TE wave cutoff frequency and raise TM wave cutoff frequency.

利用有限元方法系统地研究了机车、罐笼、金属支护立柱等长列金属物体对井下规则隧道中电磁波截止频率的影响，可知长列金属物体的存在使TE波模截止频率降低，而使TM波模截止频率升高。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。