計算幾何學 的英文怎麼說

中文拼音 [jìsuànjīhéxué]
計算幾何學 英文
computational geometry
  • 計 : Ⅰ動詞1 （計算） count; compute; calculate; number 2 （設想; 打算） plan; plot Ⅱ名詞1 （測量或計算...
  • 算 : Ⅰ動詞1 （計算數目） calculate; reckon; compute; figure 2 （計算進去） include; count 3 （謀劃;計...
  • 幾 : 幾代詞1. （多少, 用於詢問數量和時間） how many 2. （表示不定的少數目） a few; several; some
  • 學 : Ⅰ動詞1 （學習） study; learn 2 （模仿） imitate; mimic Ⅱ名詞1 （學問） learning; knowledge 2 （學...
  • 計算 : 1 （求得未知數） count; compute; calculate; reckon; enumerate 2 （考慮; 籌劃） consideration; pla...
  1. The scielltific computational theories and methods on bird strike to the windshield of aircraft have been systematically studied and summed up in this thesis, such as fem comptltational principles and procedures to elastic dynamic problems under the conditions of small and non - linear finite deformation, 3d viscous elastic constitutive theory and incremelltal expression under the consideration of the rate effect of non - metallic materials like the aircraft windshield, and the numerical compatational principles and key constitutions for impact - contact dynamic subjects

    2 、系統學習並歸納總結了鳥體撞擊風擋結構問題中的科學計算理論與計算方法。按照鳥撞問題數值計算方法逐步深入的思路，系統總結了小變形結構動力學有限元數值計算方法、有限變形的幾何非線性有限元數值計算方法、粘彈性體非線性形變的本構物理關系；對于實施復雜結構有限元動力學計算的載荷增量方法提出了對newmark差分的改進以及進行材料與幾何非線性數值計算的細致步驟。
  2. The benefit of this cooperation has been that archaeoastronomy has expanded to include the interrelated interests in ancient and native calendar systems, concepts of time and space, mathematics, counting systems and geometry, surveying and navigational techniques as well as geomancy - dowsing - and the origins of urban planning

    該合作的好處就是考古天文學已經擴展了包括古代和本土日歷系統、時間空間概念、數學、計算系統和幾何學、測量和航海技術以及泥土占卜相關的興趣-探尋水源和礦藏-和城市規劃的由來。
  3. With the use of finite method we have developed computer simulation software for vacuum microtriodes with wedge - shaped and cone - shaped cathode on the basis of stduying deeply the field emission theory of vacuum microelectronics. the software included field section, grid point numbering, and the calculation of electric currents, transconductance and cathode capacitance, moreover, it can simulate the properties of vacuum microeletronic with variant structures and sizes. the relationship was studied and simulated among electic properties and device structures, sizes and cathode materials etc. the optimized design of vacuum microtiode was proposed

    本文在深入研究真空微電子器件場致發射理論的基礎上，根據圓錐形、楔形陰極真空微電子三極體的不同特點，分別建立了物理和數學模型，在考慮空間電荷密度影響的前提下，以有限元法為基礎採用迭代的方法計算出真空微電子三極體內的電勢分佈情況，繪制出了等勢線、電子軌跡線，並得到了器件電學性能隨幾何參數的變化情況。
  4. The model is based on the theory of physical optics ( po ), geometry theory of diffraction ( gtd ) and uniform theory of diffraction ( utd ), and it can compute and analyze the propagation of em wave in microcellular environments by using improved ray tracing method

    該模型基於物理光學（ po ） 、幾何繞射理論（ gtd ） 、一致性繞射理論（ utd ） ，利用改進的射線跟蹤法對微蜂窩中電波傳播特性進行了數值分析計算。
  5. The blending surface is itself a generalized canal surface, the spine curve of which is a ph pythagorean - hodograph curve

    曲面拼接問題是計算機輔助幾何設計cagd計算機圖形學cg等領域中的一個重要問題。
  6. A new method should be discovered to design the function block. the thesis is based on the rheology and hydrokinetics of the polymer melt, and calculates the velocity in the die by fem simulation, and provides die design with theory proof. according to the existed theory, i summarize and conclude the fem formula of the polymer flow, and then write the program to calculate on the computer

    本論文中功能塊結構的研究，是以熔體的流變性以及流體動力學理論基礎上，對在口模中的熔體進行數值模擬，計算出熔體在口模中的流動參數（主要是速度的分佈） ，從而可以科學的對功能塊幾何結構進行優化。
  7. When the truss is large such a calculation of a relative displacement by the laws of geometry becomes excessively tedious.

    當桁架很大時，根據幾何學定律來計算相對位移就會變成很麻煩的事。
  8. It is difficult to model them by means of traditional geometry theories, and its computation quantity is too enormous while its modeling speed is too slow

    而這些特殊效應從形狀和狀態上來說是不規則的，如果運用傳統的幾何學理論很難比較真實地實現這些對象，而且計算量比較大，生成速度慢。
  9. From the aspect of geometry, structure design, manufacture and examine, this paper generally summarizes the gcm ' s study progress in detail, discusses its kinetic rule and the determination of its primary structure parameter, and educes its surface equation and pressure angle equation based on the homogeneous matrix transformation and the conjugate engagement theory of spatial surface. on the basis of geometry study of gcm, the paper makes a comprehensive analysis to the interference phenomenon that will possible exist in the assemble course of two different structure of gcm with the help of matlab software

    本文從運動幾何學、結構設計、動力學、製造和檢測等方面對國內外弧面凸輪機構的研究進展進行了全面綜述，詳細論述了高速凸輪機構的運動規律和弧面凸輪機構基本尺寸的確定，基於空間曲面共軛嚙合原理，通過齊次變換推導了外弧面凸輪的曲面方程和壓力角方程，並提出了對應的廓面修形演算法；提出了內弧面凸輪機構的構想，推導了內弧面凸輪的曲面方程和壓力角方程。
  10. 2 kewei lai, a computational geometry approach to geometric tolerancing, dept. of mechanical eng. northeastern university

    3楊芳.計算幾何方法評定圓度的研究.天津大學研究生畢業論文
  11. It covers many new fields, such as computer science, computing mathematics, computing geometry, computer graphics and intelligence

    它涉及計算機科學、計算數學、計算幾何、計算機圖形學和人工智慧等新的學科領域。
  12. The dissertation consists of seven chapters which are dealt with many fields, such as cad / cam, aircraft design, computational geometry, computer graphics etc. the research achievements and main contents are as follows : 1

    論文共分七章，內容涉及cad cam 、飛行器設計、計算幾何、計算機圖形學等。既有理論研究、方法探討、又有實際應用。
  13. The thesis designed the structure of a firewall in global, and then it go deep into the problem of searching and maintaining the filter rules and the state inspection table. it employed the data structure and algorithms of geometry and graph theory in the design of firewall

    本文在帶狀態監測的防火墻結構基礎上，首先從總體上設計了整個防火墻的結構，進而研究了過濾規則庫和狀態監測表的搜索、維護問題，提出了將計算幾何學、圖論中的數據結構和演算法引入防火墻的設計的方式，將基礎理論應用到實踐中來。
  14. In this paper, the method vision - based for uav autonomous landing is researched using technology of image processing, computer vision and projection geometry. the first task of computer vision - based uav autonomous landing is to recognize and track the runway using computer vision. a simple method is discussed to recognize and track the runway in the image sequences using template matching

    本文的研究工作來源於「 973 -無人作戰飛機系統」項目，以某型無人機試飛過程中拍攝的著陸場景圖像為基本研究材料，綜合利用了圖像處理技術、計算機視覺技術、射影幾何學等方法研究了跑道識別與跟蹤、進場著陸段的圖像處理、無人機著陸段飛行參數提取等相關問題。
  15. Scientific computation visualization interactive virtual reality computer dynamic simulation etc., to study thoroughly and carefully on critical technologies such as mixed - language programming simplification of scene models displaying realistic image and animation of 3d scene models and so on in this dissertation, the methods to build scene models were studied and applied to develop a dynamic simulation system of 3d railway scene based on this idea, the major study contents and results can be summarized as follows : 1 ) mixed - language programming can complement each other between different programming languages and the method has a general significance and can become popular many computation models including development of dtm optimum of dtm and reorganization of dtm were developed with fortran language in order to use the ripe codes, the dissertation succeeded in integrating the developed fortran codes to the visual c + + environment and achieving the course of mixed - language programming 2 ) the methods to build scene models for 3d location design were discussed in the dissertation and the development and animation of scene models had been realized by applying synthetically those technologies such as computer graphic computational geometry and geometrical modeling and computer dynamic simulation etc, and adopting opengl 3d graph library then achievement was got by using the technology of 3d visualization to livingly express design results 3 ) combing with the concerned study and development projects, adopting vc + + as development tools and in the light of those theories and algorithms stated in this dissertation, a software, which could build scene models with realism for 3d railway location design, in the name of " the dynamic simulation system of 3d scene of railway " was developed., the correctness was proved by using the software to build the 3d scene models and achieve their animation of suining - chongqing railway and yunnan - xizang railway

    本文綜合利用計算機圖形學、科學計算可視化、人機交互、虛擬現實、計算機動態模擬等理論和技術，針對混合語言編程、真實感圖形繪制以及三維景觀模型的動畫驅動等關鍵技術，進行了深入細致的研究，從而探討了建立逼真景觀模型的方法，並基於本文提出的方法研製了一個鐵路線路三維景觀動態模擬系統。基於這一思想，本文主要研究內容及研究成果如下： 1 ）混合語言編程可以實現語言優勢互補，具有普遍意義。針對數字地面模型的建立、優化、重組等計算模塊是成熟的fortran程序代碼，本文成功實現了vc + +與fortran語言的混編； 2 ）緊緊圍繞三維選線設計中景觀模型的建立方法展開研究，綜合利用計算機圖形學、計算幾何及幾何造型學以及計算機模擬技術，採用opengl三維圖形庫，實現了景觀模型的建立以及動畫驅動，使得三維可視化技術成功應用於選線設計成果的三維直觀表達； 3 ）結合有關科研課題，利用vc + +開發工具，以本文所述的理論和演算法為基礎，研製和開發了一個建立三維選線設計逼真景觀模型的系統軟體- - 「鐵路線路三維景觀動態模擬系統」 。
  16. The paper applies algebraic geometry, computational geometry, approximation theory to study the following problems : the nother type theory and the riemann - roch type theory of the piecewise algebraic curve ; the number of real intersection points of piecewise algebraic curves ; the real piecewise algebraic variety and the b - net resultant of polynomials

    本文應用代數幾何，計算幾何，函數逼近論等學科的基本理論，分別就分片代數曲線的n （ ? ） ther型與riemann - roch型定理；分片代數曲線的實交點數；實分片代數簇以及多項式的b -網結式進行研究。
  17. In this paper we designed the relief height of the computer optical elements mainly based on the geometrical theory and the scalar quantity diffractive theory. based on the geometrical theory, we achieved the height of phase relief that can shape the laser beam into 4 square spots, square frame, 1 square spot ; with the computer simulation and drawing program, the diffraction patterns are gotten in this paper, the results agreed with the anticipated diffraction patterns ; in this paper we also discussed the affects to the diffraction patterns by changing some parameters

    本文主要基於幾何理論和標量理論來設計計算機光學元件表面的浮雕高度，文中用幾何理論推導出了把高斯光束整形為四個矩形光斑束，正方框形光束、矩形平頂光斑的計算機光學元件表面的浮雕公式;通過計算機輔助設計，計算得到了計算機光學元件表面上的浮雕高度，設計出了計算機光學元件。
  18. As the yardstick changes of crack face is following self - similarity physics law, this paper prosecuted several deep researches on the crack face in rock mass as follows : 1 ) the fractal geometry theory is used to study the characteristic of crack face number in rock mass and a research method about three - dimension fractal distribution to crack face in rock mass was brought forward. we calculate the number of crack when the position of the crack face distribution is random and the crack face ' s slant angle and azimuth angle is certain by numeral experiment, and verify that the crack face number in rock mass comforming three - dimension fractal distribution law is correct

    1 ）應用分形幾何學理論對裂縫面數量分形分佈進行了研究，提出了巖體裂縫面數量的三維分形分佈研究方法；在巖體裂縫面隨機分佈和裂縫面分組的情況下，用數值試驗方法，分別計算各種剖面不同尺度裂縫跡線條數，證明了「巖體裂縫面數量服從三維分形分佈規律」這一巖體力學的重要物理結論。
  19. Castep can give information about total energies, forces and stresses on an atomic system, as well as calculating optimum geometries, band structures, optical spectra, phonon spectra and much more

    Castep能在一個原子系統上給全部的精力，力量和壓力的信息，以及計算最佳幾何學，樂隊結構，光系列，聲子系列並且更多。
  20. A new approach of approximate dwell function synthesis for planar six - bar mechanism is presented in the dissertation, which transforms the synthesis of planar six - bar mechanism to the synthesis of two - bar linkage, reduces the variables to four, by selecting all dimensions of the four - bar mechanism in advance. then, based on constraint curves of characteristic points of mechanisms, the characteristic points on the float link can be certained. as a result, unified model of dwell function synthesis of planar six - bar mechanism is set up

    本文提出了一種實現平面六桿機構間歇函數綜合的簡化優化方法，將多維優化轉化為四維優化；從工程實際出發，運用連桿機構運動幾何學、數學規劃和計算機數值計算和圖形顯示技術等學科的理論成果，對平面六桿機構間歇函數綜合進行了深入系統的研究，建立了平面六桿機構間歇函數綜合的理論和方法，並給出了相應的算例。
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