繞射體 的英文怎麼說

中文拼音 [ràoshètǐ]
繞射體 英文
diffractor
  • 繞 : 繞名詞1. [書面語] （彎曲） bend2. （姓氏） a surname
  • 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） ...
  • 體 : 體構詞成分。
  1. The major work is as follows : solution of two dimensional radiation or diffraction fluid field. this thesis extends multipole expansion method to adapt to disturbed fluid fields of 2d floating bodies with asymmetric forms, which is applied with symmetric forms originally. and given the solution of potential velocity and hydrodynamic pressure of radiation and diffraction fluid fields, which is incited by a 2d arbitrary form, actual application field of the multipole expansion method has been enlarged

    關於二維擾動流場的求解：將通常僅適宜求解具有對稱形狀二維物體擾動流場的多極展開法（保角變換方法）擴展至非對稱形狀二維物體，給出了任意形狀二維物體的輻射和繞射流場的速度勢及水動壓力的頻域解，進一步擴大了多極展開法的實際應用范圍。
  2. The other is that the conducting body is electrically large. we can solve this case by high frequency methods or hybrid methods of high and low frequency for example the hybrid of mom and gtd

    另一種情況是金屬多面體是電大尺寸，此時可以通過高頻或高低頻混合的方法來解決，例如矩量法和幾何繞射混合（ mom gtd ）的方法。
  3. This method applies the extended strip theory to establish the nonlinear ship motion equations in regular head seas, obtains stable time course by resolving in time domain, and then pressure vectors will be available. the pressure includes static pressure, incident waves pressure, diffraction pressure, radiation pressure, and wave impact pressure, and changed with instantaneous draft of each intersection

    該方法應用擴展的切片理論建立迎浪規則波中船舶非線性運動方程，通過時域步進求解獲得船舶剛體運動的穩定時歷，進而給出與船體各橫剖面瞬時吃水相對應的靜水壓力變化、入射波壓力、繞射壓力、輻射壓力和波浪沖擊壓力諸分量。
  4. Both target and projectile orbit the primary.

    無論靶體還是射體都在繞主天體作軌道運動。
  5. 2. it simplified the tlp as vertical floating arrays, did some work about second - order nonlinear diffraction wave force on tlp

    2 .將結構簡化為直立浮筒柱群，研究了平臺本體上波浪的二階非線性繞射問題。
  6. In order to obtain the complex rcs of the target quickly in high frequency band, the graphical electromagnetic computing software, greco, is used. the modification of the computing kernel code is presented. the judgement of edges of complex targets is more sufficient and the computation of edge wave based on physical theory of diffraction ( ptd ) is more exact after the modification

    為了可以準確地預估雷達目標的rcs ，我們對于航天部207所的圖形電磁計算軟體（ greco ）進行了進一步的開發與包裝，用borland公司的c + + builder開發了更加易於使用的基於windows操作系統的新版greco ，並且在考察了原有的greco計算內核之後，結合計算機圖形學方面的理論，對greco的內核代碼進行了改進，整體上使得邊緣繞射場的計算結果更加準確。
  7. The calculated drafts covers the whole possible ship draft in the large amplitude motion ; secondly, the research creates and solves the ship large amplitude motion equations. on the one hand, the actual calculation takes into account the coupling between the different motion modes, on the other hand, in the process of calculation of the ship hydrodynamic coefficient, it considers the influence of the nonlinear factor. the hydrodynamic coefficient used in the calculation of froude - krylov force, diffraction force and radiation force changes instantaneously following the draft, and the hydrostatic buoyancy is computed very accurately for the instantaneous immerse hull

    本文的研究分為二個部分：首先利用frank源匯法計算水動力系數，計算包括不同吃水時的附加質量和阻尼系數，吃水范圍涵蓋了船舶大幅度運動時所有可能的吃水；然後建立和求解船舶大幅度運動方程，在實際計算時一方面考慮了運動模態之間的耦合，另一方面在計算水動力時，考慮了非線性因素的影響。 froude - krylov力、輻射力、繞射力中的水動力系數隨吃水瞬時變化，靜浮力的計算精確到船體瞬時濕表面積，最後用四階龍格?庫塔方法在時域內求解船舶運動方程，並進行了載荷計算。
  8. After solution of radiational and diffractional fluid field of asymmetrical sections by applying the multipole expansion method, wave loads on damaged ships are calculated by the linear strip theory under the non - upright floating condition, taking the effect on the heel angle and trimming angle caused by the damaged tank inundation below waterline into account

    然後採用線性切片理論，計及水線以下破損后船舶由於艙室進水產生的橫傾角與縱傾角的影響，利用多級展開法求解非對稱剖面的二維輻射和繞射流場，計算了破損船體非正浮狀態條件下的波浪載荷。
  9. 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 。
  10. 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。
  11. Diffraction test for a submerged body in 2 - d numerical waves

    二維數值波浪水池中的潛體繞射試驗
  12. Seismic wave field feature of ordovician carbonate karst reservoir ( cave, reef, hole, crack and cranny ) in tahe oil field is the difference magnitude diffraction wave over weak reflection amplitude, so, the diffraction wave exact imaging and fidelity amplitude processing is the basic of carbonate karst reservoir study

    摘要塔河油田巖溶儲集體（洞穴、礁灘、孔洞、裂縫或裂隙等）的地震波場特徵是弱反射背景之上的強弱不同的繞射波，因此，繞射波準確歸位成像和振幅保持是研究巖溶儲集體的基礎。
  13. We organize it along the following lines : in chapter 1 we discuss the fixed boundary problem with elliptic equation or elliptic equations ( diffraction problem ) system

    具體內容由以下三章組成：第一章我們討論的是具有固定邊界的橢圓型方程問題和橢圓型方程組問題（即繞射問題） 。
  14. Second order wave diffraction around 3d bodies by time - domain method

    三維物體上二階波浪繞射的實時模擬
  15. On the basis of this analysis the radiation and diffraction forces of the ship are calculated using these three methods and compared. at the same time vertical ship motions in regular wave are solved by these three methods. the results are compared to test each method ' s availability and suitability, thus the theoretical basis of optimize design of sea - keeping performance is provided

    分別介紹了二維切片法、高速細長體理論和三維理論的基本原理，分析了三種不同方法各自的適用性，在此基礎上分別計算了船舶的輻射力和繞射力，比較了這三種方法的計算結果，為不同營運目的的船舶耐波性計算提供陜速有效而實用的計算方法；同時應用三種方法計算了船舶在規則波中的垂向穩態運動響應，比較三種方法的計算結果，測試各種方法的有效性和適用性，為船舶耐波性的優化設計提供原始的理論基礎； 2
  16. On the basis of the study of the characteristics of diffracted wave produced during the vibration propagation along the fissures, in association with practical example, the paper introduces the features of prospecting the depth of fissures of structural mass by using the seismic method

    該文在研究振動沿裂縫傳播時所產生繞射波的特徵基礎上，結合實例，介紹了運用地震法探測結構體裂縫深度的方法特點。
  17. Abstract : on the basis of the study of the characteristics of diffracted wave produced during the vibration propagation along the fissures, in association with practical example, the paper introduces the features of prospecting the depth of fissures of structural mass by using the seismic method

    文摘:該文在研究振動沿裂縫傳播時所產生繞射波的特徵基礎上，結合實例，介紹了運用地震法探測結構體裂縫深度的方法特點。
  18. And then a hybrid technique combining ddm with eb - fem, po, and ptd is given for the analysis of electromagnetic scattering by electrically large bodies with deep cavities

    在此基礎上，將ddm與eb一fem 、物理光學法、物理繞射理論相結合，分析了帶有深腔的電大尺寸三維導體目標的電磁散射特性。
  19. In addition, conventional surface analytical tools, i. e., leed and aes, are also equipped to provide surface information of long - range order and elemental identity

    傳統的表面分析設備如低能電子繞射儀（ leed ）及歐傑電子能譜儀（ aes ） ，則用來決定晶體表面的長程結構和元素成份。
  20. To date, most research on cmos rf circuits is focused on cmos rf front - end including some key building blocks such as low - noise amplifier ( lna ), mixer, bandpass filters, voltage control oscillators and power amplifiers. in si rf 1c, inductors need be realized on a silicon substrate along with all of the other devices in a single chip. in fact, the need for high q integrated inductors in rfics is increasing

    在無線通信技術對cmos射頻集成電路需求的大背景下，本論文在大量深入調研的基礎上，圍繞射頻集成電路中必不可少的、有多種應用的無源器件?硅集成電感及其相關的cmos射頻集成單元電路，先後在上海冶金所微電子分部工藝線上及利用上海市科委的多目標晶元項目（ mpw ）在無錫華晶上華半導體有限公司進行了大量的實驗研究，得到了一些新的結果。
分享友人
分享到 Line

分享到臉書