Based on the theory of microwave transmission in the media , matching conditiqns qf absorption films for the capture and absorption of microwave signal were ; derived 根据微波在介质涂层中传输理论，导出了微波投射到吸收材料涂层上被完全俘获和吸收的匹配条件。
Doing well requires a level of preparation that comes not through cramming but by spending months analysing an industry , a company and a job function 要想表现好，就需要一定程度的准备工作，而这种准备无法通过简单的填鸭式吸收材料来完成，需要花上几个月的时间来分析某个行业、某家公司和某项工作职能。
As the key of stealthy technology , radar - absorbing material ( ram ) has been paid more and more attention all over the world , it has being the hotpot in national defense field after the gulf - war 作为隐身技术发展的关键，微波吸收材料( ram )的研究越来越受到世界各国的高度重视，在海湾战争之后更成为国防科技领域的热点。
And as time as organic synthesis technology goes ahead , more and more organic compounds with great tpa properties appear . so , this thesis studies a series of organic molecules in gas and in solutions 本论文对有机分子气态及其在溶液中的双光子吸收特性进行了理论研究，对于寻找及合成强双光子吸收材料将具有指导作用。
The results of experiments show that the most efficient tpa materials seem to be the ones with various electron - donor ( d ) and electron - acceptor ( a ) moieties attached symmetrically or asymmetrically to a center 实验结果显示，最有效的双光子吸收材料是由电子给体和电子受体对称或反对称的与一个中心结合而成的系统。
Reference [ 1 ] has used the fdtd to solve some ridged waveguide and waveguide antenna to obtain the inside field . the feature of the paper is to analyze the antenna ' s near field in the rubber absorbing materials 文献[ 1 ]等已对一些脊波导进行过fdtd的数值解以求得到脊波导的内场，本文的特点在于分析了s波段的脊波导天线在被测量的橡胶吸收材料中的辐射近场。
Using fdtd method , the rcs of a missile head coated with absorbing material is analyzed . the results show the rcs can be greatly reduced when we coat the absorbing material at some special parts of the object 应用时域有限差分方法fdtd分析涂敷了吸收材料的一种突防弹头的雷达散射截面rcs 。计算结果显示在目标的特定部位进行吸收材料涂敷可以显著地降低目标的rcs 。
So it is important for exploring the stealth vehicle to investigate the interactions and all kinds of plasma waves . the interaction between a body in space and its plasma environment is one of the basic problems in space plasma physics 这种密度扰动，在电离层中可以激发起各种等离子体波，研究这种相互作用及各种等离子体波，对探测涂有各种雷达波吸收材料的隐身飞行体有着重要的意义。
But ridged waveguide antenna which is small in volume when working at a low frequency band can obtain a high resolution and is suitable in the rubber material measure . one of the features of the paper is that some improvements of fdtd are presented 脊波导天线与普通金属波导相比，在较低的频域可以有较小的工作尺寸，因而能达到较高的分辨率，且便于与同轴馈线连接，很适合用于橡胶吸收材料的测量中。
At present , a composite medium in which ultrafine particles are dispersed in another originally homogeneous polymer ( matrix ) is an important absorbing material and has been used widely . this kind of material can be used both in coatings and in structure materials 目前，一类非常重要且在国内已得到实用的微波吸收材料是在高分子粘结剂基体中加入超细颗粒制成的混合物，这种材料既可以用于涂覆型吸波材料又可用于结构型吸波材料中的某一层。
