散射運算元 的英文怎麼說

中文拼音 [sǎnshèyùnsuànyuán]
散射運算元 英文
scattering operator
  • 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） ...
  • 運 : Ⅰ動詞1 （物體位置不斷變化） move; revolve 2 （搬運; 運輸） carry; transport 3 （運用） use; wield...
  • 算 : Ⅰ動詞1 （計算數目） calculate; reckon; compute; figure 2 （計算進去） include; count 3 （謀劃;計...
  • 散射 : [物理學] [電學] scattering; radio scattering; scatter; dispersion
  • 運算 : [數學] operation; arithmetic; operating
  1. Due to the importance of the accuracy of the time - domain impedance matrix elements, the techniques by which treating of the singular integrals and near singular integrals arose from the tdie - mom solving process are analyzed in detail, and these techniques are utilized to solve the tdie. in the end, using triangle patches discretizing arbitrarily 3 - d dielectric objects and metal - nonmetal composite objects surface and utilizing spatial rwg and temporal triangular bases, the tdie are solved by mot algorithm

    最後，分別對三維介質目標、金屬非金屬組合目標散射體表面用三角貼片離散，並在空間上採用rwg基函數，在時間上採用三角型時間基函數、利用阻抗元素的精確演算法計算出阻抗矩陣，再運用mot法分別求解了介質體目標，金屬非金屬組合目標的時域積分方程，並分析了金屬非金屬組合目標分界面上的等效電流與等效磁流的特性。
  2. 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 。
  3. Incremental length diffraction coefficients ( ildc ) is adopted to calculate the contribution of edge diffraction. in order to improve the accuracy of calculation, multi - scattering is discussed, based on the two former contributions and ray - tracing method. geometrical optics ( go ) and physical optics ( po ) are used to calculate the multi - reflection between facets and facets

    對于鏡面反射採用物理光學法計算其散射貢獻，結合基於面元的目標模型的表示，採用離散的積分形式，將面電流積分化簡為線積分，簡化計算復雜度；對于邊緣繞射，運用增量長度繞射系數理論計算目標邊緣繞射場；在多次反射中，則以光線跟蹤方法為基礎，採用幾何光學、物理光學相結合的方法分析考慮多次散射場。
  4. Is a string type that can be used in arithmetic and also as a keyed map or indexed optionally sparse array

    是一個字元串類型，可以用在算術運算中，也可以作為鍵映射（ keyed map ）或索引（可選情況下索引可以分散）數組。
  5. In chapter 2, we generalize its nonlinearity from the cubic case to the p - th power cases. through considering the cauchy problem for the generalized davey - stewartson equation in, we obtain its scattering theory

    第二章中就另一種形式的具有兩個非線性項的廣義davey - stewartson方程在空間中給出了散射運算元的存在性。
  6. Surface waves ), the 2d generalization of the usual cubic id schrodinger equation turns out to be the davey - stewartson equation. in chapter 1, we study the scattering for a class of nonlinear davey - stewartson equations with three nonlinearities. we proved that their scattering operator exists in h1

    在淺水波理論中， davey - stewartson方程是一個非常重要的模型，它可由具有立方項的一維schrdinger方程在二維中的推廣而得到，目前，已有大量的工作致力於該方程的初值問題的研究，本文第一章中利用研究schrdinger方程散射運算元的方法來得到具有三個非線性項的廣義davey - stewartson方程的散射運算元在整個能量空間h ~ 1中存在，當然其中附加了一些必要的假設。
  7. The change of energy in wall rock is tracked in the whole process and the amount of energy transferred to linings is also evaluated. 5 ) based on the principal of energy invariance and the energy properties of sfrc, a practical design equation that related the thickness of projecting sfrc to the energy related properties of tunnel is given in the end. this equation is then used to design a single - track railway tunnel in iii grade rock condition

    並進一步推導了不同形式的構件間的能量耗散關系，為將標準試驗的能量統計結果運用於實際結構中打下了基礎； 4 ）利用有限元軟體對隧道開挖過程進行了三維模擬，得到了隧道圍巖在開挖掘進過程中的能量轉化趨勢和規律，得到了鋼纖維噴射混凝土襯砌在支護過程中的能量變化； 5 ）利用能量守恆原理和已經推導出的構件能量耗散關系，建立了鋼纖維噴射混凝土襯砌厚度與圍巖開挖能量變化間的關系，並運用此方法對級圍巖條件中的鐵路單線隧道的鋼纖維噴射混凝土襯砌進行了設計計算；
  8. The material ways are to model the honeycomb wall as an impredence surface, to express the infinite honeycomb by using periodic green ' s function, and using method of moment to establish the mathematic model, in applying the methods of moments, we choose the roof function as basic function and choose the razor function as test function ; by equating the incident field to sum of the scattering field and impledance field ; we will set up the integral equation for the surface current, solving it by mom equation. then gain it ' s reflected coefficient ' s numerical result. and we propose first the definition of the equivalent electromagnetic parameters and present a method to calculate them from the gained reflection coefficient

    具體方法就是將浸漬吸收劑的蜂窩壁用表面阻抗表示，將無限大的周期結構的電場用周期格林函數來表示，選取有耗蜂窩結構中具有代表性的基本計算單元應用矩量法建立數學模型，在運用矩量法時用屋頂函數作為基函數，刀片函數作為檢驗函數，根據蜂窩壁表面電場必須滿足入射電場等於散射電場和阻抗電場之和的規律，推導表面電場積分方程，求解蜂窩結構的表面電流，利用蜂窩的周期規律得到無限大均勻周期陣列的散射電場。
  9. As a following step, the spectral method is reviewed intensively, including how to build the spectral equation and how to use galerkin method solving the inducting current and scattering field

    然後，詳細討論了譜域方法，包括運算元方程的建立、用galerkin方法求解感應電流，求解散射場的過程。
  10. Different from the scattering theory used in the derivation of conventional generalized screen propagator, in this paper, a high order formula of generalized screen propagator for one - way wave equation is proposed by using the asymptotic expansion of single - square - root operator

    摘要不同於常規廣義屏傳播運算元的推導中使用散射理論，本文利用單平方根運算元的漸近展開，推導出了單程波方程廣義屏傳播運算元的高階表達式。
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