射影平面 的英文怎麼說

中文拼音 [shèyǐngpíngmiàn]
射影平面 英文
plane of projection
  • 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） ...
  • 影 : Ⅰ名詞1 （物體擋住光線后映出的形象） shadow 2 （鏡中、水面等反映出來的物體形象） reflection; image...
  • 平 : Ⅰ形容詞1 （沒有高低凹凸 不頃斜） flat; level; even; smooth 2 （高度相同; 不相上下） on the same l...
  • 面 : Ⅰ名詞1 （頭的前部; 臉） face 2 （物體的表面） surface; top 3 （外露的一層或正面） outside; the ri...
  1. On the stage of describing the shape of airplane and extracting feature, we derive five - coplanar - point invariant from the basic projective invariant - cross ratio, and resolve the problem of stabilization of five - coplanar - point when there is three points are nearly collinear

    在對飛機外型提取特徵進行描述的階段，首先從基本的射影不變量交比不變量出發，推導出了平面五點不量，並解決了當有三點接近共線時不變量不穩定的問題。
  2. According to the theory of scalar diffraction, first, the equipollence of spatial distribution of the plane - wave interferential field and parallel projective sine grating is discussed

    摘要根據標量衍射理論，首先討論了兩平面波干涉場的空間分佈與平行投影正弦光柵的等價性。
  3. A projection is defined as any orderly system whereby the meridians and parallels of the spheroid may be represented on a plane.

    投影是一種有規律的方法，用來把橢球面上的子午圈和平行圈映射在一個平面上。
  4. We make use of a mapping known as stereographic projection.

    我們作一個稱為球極平面射影的映射。
  5. Developed from the theory of projective geometry, this paper made a detailed research on the basic theory of the image - based plane measurement technique

    從射影幾何理論出發，論文詳細研究了基於圖像的平面測量的基本原理。
  6. At the beginning, the basic theory of plane measurement ? some basic elements in planar projective geometry, including 2d protective plane, homogeneous coordinates and homography are introduced. the pinhole camera model and the basic algorithm of image measurement are discussed

    首先介紹了平面測量問題的理論基礎? ?平面射影幾何的一些基本元素：射影平面，齊次坐標，平面單應等，接著討論了攝象機針孔模型以及基於圖象的平面測量基本原理。
  7. This rotation can be simplified by plotting the positions of the principal sections and principal axis on a stereographic net as described by jessop and wells from the rotations recorded.

    按照傑索普和威爾士所論述的方法，根據記錄下來的轉動角，把主截面和主軸的位置畫到一個極射赤平投影網上，可使上述過程簡化。
  8. Second, by computing the trajectory of the missile and the method of analyzing cep, influences that the fighter ' s height, speed, pitch angle, the deflection angle between fighter and target, and the target moving characters make on the times of fighter attack and missile launch are deeply developed. third, by relating the motion of the missile and the fighter, the influences that fighter ' s dive angle and the deflection angle between fighter and target make on the attack field of the fighter are discussed in this paper when the fighter perform vertical and horizontal attack. criterion of attack effect is proposed focusing on attack time of the fighter, trajectory of the missile and destruction probability to the target

    本文主要完成了以下幾個方面的工作：對導彈可發射區和飛機可攻擊區進行建模，通過對導彈彈道的模擬計算，並運用典型的圓概率偏差精度分析方法，詳細討論了飛機實施攻擊時，飛機的飛行高度h 、速度v 、俯仰角、與目標的偏離角_ x及目標運動特性等對飛機攻擊時機和導彈發射時機的影響；因此，將飛機和導彈結合起來，詳細研究了飛機在垂直平面和水平平面內實施攻擊時，飛機俯沖角和與目標的偏離角_ x對飛機的攻擊范圍的影響；以飛機實施攻擊的時間t 、彈道特性和對目標的殺傷概率p來評判對地攻擊的效果；最後給出典型算例，通過對空地攻擊過程的模擬實現，對飛機飛行過載提出要求。
  9. It was the same scene that he had admired from that mound the day before. but now the whole panorama was filled with troops and the smoke of the guns, and in the pure morning air the slanting rays of the sun, behind pierre on the left, shed on it a brilliant light full of gold and pink tones, and broken up by long, dark shadows. the distant forests that bounded the scene lay in a crescent on the horizon, looking as though carved out of some precious yellow - green stone, and through their midst behind valuev ran the great smolensk road, all covered with troops

    這仍然是他昨天在這山崗上欣賞到的景緻但是現在這一帶地方硝煙彌漫，滿山遍野都是軍隊，明亮的太陽從皮埃爾左後方升起，在早晨潔凈的空氣中，太陽把那金色玫瑰色的斜暉和長長的黑影投射到地面上，風景漸漸消失不見了，遠方的樹林，宛如一塊雕刻的黃綠寶石，在地平線上可以看見錯落有致的黑色樹巔，斯摩棱斯克大道從樹林中間即瓦盧耶瓦村的後面穿過，大道上全是軍隊。
  10. The purpose of this dissertation is to study the effect of substrate on the characteristics and microstructure of high temperature superconducting yba2cu3o7 - thin film, and well c - axis oriented epitaxial ybco thin films have been deposited on both laalo3 ( 100 ) and r - plane sapphire al2o3 ( 102 ) substrates by inverted cylindrical dc sputtering ( icds ) technique

    =本論文的目的是研究基片對薄膜結構和性能的影響關系，採用倒筒靶直流濺射技術在在laalo3 （ 100 ）和r -平面的藍寶石（ al2o3 （ 102 ） ）兩種基片上制備出c軸取向的外延高溫超導yba2cu3o7 -薄膜。
  11. Base on helmholtz integral equation, the incoherent scattering of plane wave from rough cone - shaped surface is derived with the far field theory and stationary phase method. and the incoherent scattering of plane wave from rough conical surface is also derived with shadowing function when the the radius of principal

    最後計算並分析了入射光為= 0 . 48 m時，粗糙錐面的平面波散射特性，考察了入射波和散射波的幾何關系，偏振態以及粗糙面統計參量等對散射強度的影響。
  12. However, if the plane of the selector aperture is not precisely coplanar with that of the first image, then diffracted rays originating from outside the area defined by the aperture may contribute to the diffraction pattern

    然而，如果選擇孔的平面與第一次成像不是正好共面，源自孔指定區域外部的衍射線可能影響衍射模型。
  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. First of all, this thesis introduced the related theoretical knowledges about near - field scattering measurement systemically, and focused on discussing the way of self - transmit and self - received near - field rcs measurement then simulated it by using column and hexagonal prism as a target under test

    重點在於探索自發自收平面近場散射測量方法，分別對圓柱和六稜柱進行了自發自收的模擬，詳細討論了窗口參數、掃描面大小對于測量結果的影響。
  15. Imev and the data in which the energy respectively is 166mev 139mev, 104mev, 90mev. on the basis of two wave functions and two optical potentials above mentioned, we have investigated a serie s of knockout reactions : through the comparing of two wave functions and two optical potentials, we find that two a cluster relative vave functions which contribute to the energy sharing results of the reaction sections are very well, especially for the ; that the received spectroscopic factors used vfm ( r ) are better than that used ; that the former not only suits to the elastic scatterings but also to the knockout reactions ; that the a cluster of knockout reactions are its local behaviors of surface. and we further testify that the distorted influences are not neglected if the incidence energies are not very high, but can be used the plane wave impulse approximate method and neglect the effects of the distorted influences if the incident energies are high enough

    在利用上述的兩種束縛態波函數和兩種光學勢的基礎上，我們研究了一系列的敲出反應：通過對比兩種束縛態波函數和光學勢，我們得到的結論是：兩種束縛態波函數和光學勢對反應截面的能量分配譜的貢獻都比較好，但尤以波函數_ （ li ） （ r ）為佳；光學勢v _ （ clu ） + （ r ）得到的光譜因子比用woods - saxon勢v _ （ ws ） （ r ）的結果要好，它不僅能適用於彈性散射，且對敲出反應也能得出比較好的結果；集團的敲出反應是集團表面局域性的表現：在中低能的入射條件下，扭曲效應不能忽略，但入射能量較高時，扭曲效應影響較小，可以用平面波沖量近似的方法。
  16. The design architecture is a complex comprehensive subject, which involves architecture, sociology, folklore, psychology, human engineering, structural engineering, architectural physics, architectural materials and so on and also is concerned with furniture display, decorative materials, structures, functions, arts and crafts, greening, gardening, etc., and apply to many subjects knowledge to comprehensively conducts multi - levels parietal environment design. its means is to apply to plane part, spatial structure, perspective, illusion, light technology, reflection and color variety principles and material means making " big " space turn to " small ", while " small " space turn to " big ". and according to design requirements, the spaces are re - divided and composed making it increase visual extension, and add layers through various kinds of material structure changes that make " spacious " is not " blank " while " small " is not " crowded ", creating an anticipant style and atmosphere

    建築設計是一門復雜的綜合學科，我們研究的目標及內容它涉及到建築學、社會學、民俗學、心理學、人體工程學、結構工程學、建築物理學以及建築材料學等學科，也涉及到傢具陳設，裝潢材料的結構和性能、工藝美術、綠化、造園藝術等領域，而且是運用多學科的知識，綜合的進行多層次的空間環境設計，其在手法上是利用平面主體和空間構造、透視，錯覺、光影、反射和色彩變化等原理以及物質手段，使大空間變小，小空間變大，按設計構思的要求，將空間重新劃分和組合，使之增加視覺上的擴展延伸，通過各種物質構件組織變化，加添層次，以求大而不感其空，小而不感其塞，創造出預期的格調和建築環境氣氛。
  17. In two - view case, a method is presented for calculation 2d projective transformation and construction the virtual elements by combination of spatial points and lines. so more 3d invariants of object ' s spatial structures can be extracted from real elements and virtual eleme nts. ( 3 ) the geometric characteristics of 2d symmetric objects " in perspective images are lucubrated

    （ 2 ）擴展了2d射影變換矩陣的求解方法，將單純利用點集對應的計算模式擴展到利用直線集、點線組合等多種類型來建立兩個射影平面的對應關系；總結了平面上基於點、直線元素可求解的多種3d不變量；提出了雙視圖下由點、直線元素的多種對應關系求解2d射影變換來構造「虛元素」的方法，結合「實元素」和「虛元素」可以提取更多的空間3d不變量。
  18. The conformal microstrip antenna with some unique character has been applied in many fields, especialy on speedy objects. in this paper, an efficient fdtd algorithm is introduced to analyse the microstrip antenna. firstly, the fdtd formula in descartes coordinate system and in cylindrical coordinate system are obtained from the time _ dependent maxwell equations using the yee algorithm in a calculating region where the dielectric parameters are independent of time and space. the choice of the space discretization units and the time discretization interval are discussed which are decided by the accuracy and stability respectively. the shape and setup of the excitation source are discussed too. the excitation source is chosen to be gaussian pulse in shape. secondly, the mur ' s first - order and second - order boundary condition are deduced in cylindrical coordinate system. the methods of transforming radiation fields from near zone to far zone in the frequency domain and in the time domain are presented when fdtd is applied to analyse the characteristics of far zone. finally, three kinds of microstrip antennas are analysed. they are a slot antenna that lies on a plane ground of a microstrip, a slot antenna that lies on a cylindrical ground of a microstrip and a microstrip line _ fed aperture coupled stacked rectangular patch antenna in cylindrical coordinate system

    本文從麥克斯韋旋度方程出發，建立了笛卡兒坐標下無源空間中均勻無耗媒質的fdtd基本方程和圓柱坐標下無源空間中均勻無耗媒質的fdtd基本方程，詳細討論了fdtd法計算中時間步長和空間步長的選取原則以及激勵源的類型和設置；推導了mur一階和二階邊界條件在圓柱坐標下的差分格式；給出了在用fdtd法計算天線的遠場輻射特性時必需採用的頻域和時域近場遠場變換技術；最後用fdtd法計算了平面微帶縫隙天線、柱面共形微帶縫隙天線和柱面共形微帶層疊天線的輸入阻抗和遠區輻射場，並分析了天線的一些參數的變化對天線輸入阻抗的影響，得出了一些有用的結論。
  19. In order to study the thermal performance and residual stress of microelectronic subassembly, in this paper, a newly optical interferometry method for 3 - d displacement measurement is developed based on wavefront interference theory. in which the moire interferometry provide the in - plane displacement, but the system is different from the conventional interferometry, the system applies the double diffraction of the specimen grating, the in - plane displacement sensitivity is a factor of 2 higher than that of the conventional moire interferometer. twyman / green interferometry method for out - of - plane displacement measurement is adapted, the advantages of the optical set - up are structure novelty, and the fringe patterns of the displacement fields shown high contrast and spatial resolution

    為了詳細研究試件的熱變形特徵以及殘余應力的影響作用，本文在波前干涉理論的基礎上，設計了一新型三維光學測試系統，該系統的平面位移測試基於雲紋干涉方法，但採用與普通雲紋干涉不同的光路系統，利用試件光柵和平面反射鏡組形成的兩次衍射，使平面位移干涉條紋倍增，測量靈敏度是普通雲紋干涉的2倍，系統的離面位移場測試採用泰曼格林干涉光路。
  20. Minimum cycle bases of outerplanar graphs on the projective plane

    射影平面上外可平面圖的最小圈基
分享友人
分享到 Line

分享到臉書