散射區 的英文怎麼說

中文拼音 [sǎnshèqū]
散射區 英文
fringing field
  • 散 : 散動詞1. （由聚集而分離） break up; disperse 2. （散布） distribute; disseminate; give out 3. （排除） dispel; let out
  • 射 : Ⅰ動詞1 （用推力或彈力送出） shoot; fire 2 （液體受到壓力迅速擠出） discharge in a jet 3 （放出） ...
  • 區 : 區名詞（姓氏） a surname
  • 散射 : [物理學] [電學] scattering; radio scattering; scatter; dispersion
  1. Since the problem of feature extraction from 2 - d radar data can be approached as a parametric modeling and parameter estimation problem, the 2 - d type - discriminated geometric theory of diffraction based ( td - gtd ) model that discriminate between the localized and distributed scattering centers of the target is presented

    在對目標散射中心的建模與參數估計中，提出採用更貼近散射機理的、特徵含量更為豐富的二維散射中心模型?區分局域性與展布式散射中心類型的幾何繞射理論（ td - gtd ）模型。
  2. In the " gaussian - shape pulse excite wakefield scheme " simulation, the laser pulse undergoes " self - modulation " and " self - focusing " and the p

    在這一密度區域，傳統的觀念認為是不能激發「受激aaman散射」的。
  3. Coherently scattering region

    相干散射區
  4. Electroacoustics - random incidence and diffuse field calibration of sound level meters

    電聲學.聲級測量儀的隨機入射和散射區域的校正
  5. In the first part, the basic knowledge of particle scattering in meteorology and physics was introduced. the particles to be discussed include aerosol particles, fog droplets and raindrops and the em wave band in the discussion is near - infrared. in the second part, the mie theory was briefly reviewed and was applied to investigate the scattering characteristics of spherical atmospheric particles, the result shows that in the visibility measurement meter using forward - scattering method, when the working wavelegth is between 0. 8 m ~ 2 m, the scattering angle is between 25 ~ 40, the distinguishability and the relative scattering intensity would be better than those under other conditions. in the third part, the superellipsoid was used to describe a wide range of shapes such as spheres. ellipsoids and cylinders. an improved t - matrix method which can be used to calculate arbitry shaped particle ' s scattering field was introduced, and the scattering characteristics of non - spherical atmospheric particles was investigated with this method

    計算結果表明，從相對散射強度、同一方向上不同粒子散射的可區分程度來看，在散射式能見度探測儀器中，工作波長介於0 . 86 m 2 m ，探測角度選取前向25度40度時，探測的結果將會是比較理想的。第三部分中，使用超橢球方程來統一描述各種非球形粒子的形狀，然後使用t矩陣方法計算了一些形狀的非球形粒子的近紅外散射特性。另外，在本文中還針對球形粒子的散射場提供了一種三維可視化方法，使對散射場強度的空間分佈的理解更加簡單，直觀。
  6. The scattering matrixes and the power of the definite coated cylinder are calculated and the mueller matrix is obtained by means of statistics

    用統計方法計算出了單位體積雪區的平均mueller散射矩陣，並對後向散射功率進行了分析。
  7. In order to obtain the mueller matrix in rain area, the scattering character of one raindrop is studied, and the mueller matrix is then obtained by means of statistics. the power of the reflected waves from rain is studied according to the polarization states, and it is a matter of great significance

    本文從單個雨滴的散射入手，用統計的方法結合雨滴的weibull尺寸分佈，計算出雨區的散射矩陣，並對雨區的後向散射功率密度從極化的角度做了分析，這對于分析雷達對雨雜波的抑制有指導意義。
  8. The principle of the method is illuminated by the numerical simulation of the scattering of caustic region in a two - dimensional concave antenna

    本文通過對二維凹面天線焦散區散射場的數值模擬詳細介紹了這一理論的基本思路。
  9. This paper reviewed the researches and applications of seismic techniques in mining exploration in detail, including the fundamental researches composed of acoustic properties and scattering characteristics, regional reconnaissance studies. 2 - d and 3 - d surface seismic imaging and down hole seismic imaging, and pointed out the main seismic method used in mining exploration is reflected wave methods at present

    摘要系統地總結了國內外現有金屬礦地震勘探技術及其研究與應用現狀，其中包括巖石物理性質分析和散射波場特徵分析等基礎研究、區域普查地震技術、二維和三維地震成像技術及井下地震勘探技術。
  10. Following a discussion on the application of seismic techniques to the budunhua copper deposit in inner mongolia as well as the achievements gained, the paper points out that the ore - controlling structure can be detected by using reflection events, and the heterogeneuos bodies related to orebodies might be studied by utilizing high - frequency irregular scattering waves

    在對內蒙古布敦花銅礦勘查中的地震方法技術及取得的成果討論后指出，利用反射同相軸可研究測區的控礦構造，利用高頻不規則散射波可研究與礦體有關的非均勻體。
  11. The rain area is regarded as a random background medium, and the scattering field and backscattering matrix of the cylinder target in rain are gained. in the coherent case, the power of cylinder target in rain and air and their optimum polarization states are studied by the three - step method

    在研究雨中目標時，本文把雨區看成隨機的背景介質，利用波傳播理論、目標的邊界條件，得出介質圓柱在雨中的散射場、後向散射矩陣，並進行了相關計算。
  12. At present greco is regarded as one of the most valuable methods of radar cross section ( rcs ) computation in the high - frequency region. depending on these conditions, several researches have been completed in this paper : firstly, calculating rcs of complex conducting targets has been accomplished by greco method. the high - frequency rcs of targets are obtained through physical optics ( po ) and incremental length diffraction coefficients ( ildc ) respectively

    本論文做了以下研究工作：首先，實現了運用greco方法計算了高頻區理想導體復雜目標的雷達散射截面（ rcs ） ，分別應用了物理光學法（ po ）和增量長度繞射系數法（ ildc ）計算了目標的面元和棱邊的電磁散射，最後綜合面元與棱邊的散射效應得到目標的總rcs 。
  13. The purpose of this theme is to classify sar images into four regions : man - made targets ( vehicles and buildings ), natural targets ( trees and shrubbery ), background ( field and grass ) and shadow ( the target shadow and mirror scatter ). on the one hand, the processed results can be directly used as image product, which offer necessary parameters for expert ' s interpretation to build up an independent auxiliary interpreting system. on the other hand, the results can be introduced into sar image interpreting system as the replacing target detection and discrimination models with layer rois ( region of interest ) in order to provide potential target chips

    具體內容為：根據sar圖像基本特性，提取可靠特徵，將圖像區分為人造目標（機動車輛、建築物等） 、自然目標（樹木、灌木、樹林等） 、背景（草地、平地、植被等）和陰影（目標陰影、鏡面散射體等）四種類別，為不同的應用提供對應的感興趣區域（ roi ） 。
  14. At the initial stage of planar technique, b was employed as ideal diffusion impurity in base - region of npn si planar devices because of the match of its solid - solubility and diffusion coefficient in si with those of p in emission - region, and the good shield effect of sio2 film to b. but because of the relatively large solubility ( 5 1020 / cm3 at 1000 ) and the small diffusion coefficient, the linear slowly - changed distribution of acceptor b in pn junction can not be formed, which could not cater to the requirement of high - reversal - voltage devics. thereafter b - a1 paste - layer diffusion technology and close - tube ga - diffusion technology had been developed, while the former can lead to relatively large the base - region deviation and abruptly varied region in si, which caused severe decentralization of current amplification parameter, bad thermal stability and high tr ; the latter needed the relatively difficult pack technique, with poor repeatability, high rejection ratio, and poor diffusion quality and productio n efficiency

    在平面工藝初期，由於b在硅中的固溶度、擴散系數與n型發射區的磷相匹配， sio _ 2對其又有良好的掩蔽作用，早被選為npn硅平面器件的理想基區擴散源，但b在硅中的固溶度大（ 1000時達到5 10 ~ （ 20 ） ，擴散系數小， b在硅中的雜質分佈不易形成pn結中雜質的線性緩變分佈，導致器件不能滿足高反壓的要求，隨之又出現了硼鋁塗層擴散工藝和閉管擴鎵工藝，前者會引起較大的基區偏差，雜質在硅內存在突變區域，導致放大系數分散嚴重，下降時間t _ f值較高，熱穩定性差；後者需要難度較大的真空封管技術，工藝重復性差，報廢率高，在擴散質量、生產效率諸方面均不能令人滿意。
  15. Using the dsd models and forward scattering amplitude computed by the least squares fitting method, the specific attenuations at l - 400ghz have been computed and analyzed, the parameters of " power law " relation between specific attenuation and rainfall rate are obtained. the specific attenuations in qingdao, guangzhou and xinxiang are compared with itu - r specific rain attenuation models

    利用平均雨滴尺寸分佈和點匹配法計算的雨滴的前向散射數據計算和分析了青島、廣州和新鄉地區1 ? 400ghz特徵雨衰減特性，得到了特徵雨衰減與降雨率的指數關系參數，並與itu - r （ internationaltelecommunicationunion - radiocommunication ）特徵雨衰減模式進行了系統的比較研究。
  16. The extracted height - height correlation function and the random surface parameters obtained ever since conform with those obtained by the measurement of afm in chaper 3, based on the light scattering theory of kirchoff approximation, we propose the method for the extraction of surfaces parameters from the correlation functions of speckles intensity produced by light scattering in the region near the random surfaces

    我們以對三個高斯相關的隨機表面樣品的實驗測量為例，對該方法行了驗證。所測得的結果與用原子力顯微鏡測量的結果符合得很好。第三章根據基爾霍夫近似下的光散射理論，提出了從隨機表面附近衍射區內的散斑場相關函數中提取隨機表面參量的方法。
  17. But if we want to make it work normaly and make it work with electronic development to distinguish the neutron ' s inelastic scattering y spectra with the capture spectra, then we can get the element ' s inelastic scattering y spectra, we must research again the controlled circuit of the pulse neutron generator

    而要使脈沖中子發生器正常工作並且能於我們自己研製的電控門配合，將中子與物質中所含元素的原子核相互作用的非彈性散射反應和俘獲反應區分丌來，從而得到能夠較好的表徵該元素的非彈性散射譜。
  18. A comprehensive method for recovering the inverse scattering boundary

    反演聲波散射區域的一種組合方法
  19. The study of the effect of the momentun distribution of target nucleons on the scdw calculation is performed, which shows that the larger nucleon momentum compenents affect the double differential cross sections at backward and forward angles, while smaller nucleon momentum compenents affect the cross sections near the qes angle

    本文還分析了核子動量分佈對scdw模型雙微分截面計算的影響，發現大動量的核子成分的增加會導致截面計算值在大角度區域和極小角度區域的增大；小動量核子成分的減小會導致截面計算值在準彈性散射角附近的減小。
  20. This technique combines the edge - based finite - element method with physical optics ( po ) and physical theory of diffraction ( ptd ). the hybrid technique is applied to compute the scattering fields from the electrically large bodies with cracks and cavities on their surfaces. it is also used to analyze the scattering characteristics of microstrip antennas residing in a cavity mounted on metal objects with finite sizes

    本文採用edge - basedfem為基本方法，結合物理光學法（ po ） 、物理繞射理論（ ptd ） 、邊界積分方程（ bi ） 、區域分解技術（ ddm ）和完全匹配層（ pml ）吸收邊界條件等求解方法構成的混合方法，對電磁散射和輻射問題進行了研究，主要包括以下內容：提出了一種edge - basedfem與物理光學方法和物理繞射理論相結合的混合方法? fem po - ptd方法，並將該混合方法應用於帶有腔體或槽縫的電大尺寸導體目標的電磁散射特性分析和位於有限導體目標上的背腔式微帶貼片天線的電磁散射特性分析。
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