有理曲面 的英文怎麼說

中文拼音 [yǒulǐqūmiàn]
有理曲面 英文
rational surface
  • 有 : 有副詞[書面語] （表示整數之外再加零數）: 30 有 5 thirty-five; 10 有 5年 fifteen years
  • 理 : Ⅰ名詞1 （物質組織的條紋） texture; grain （in wood skin etc ） 2 （道理;事理） reason; logic; tru...
  • 曲 : 曲名詞1 （一種韻文形式） qu a type of verse for singing which emerged in the southern song and ji...
  • 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...
  • 有理 : 1 （有道理） reasonable; justified; in the right 2 [數學] rational; 有理函數 rational function; ...
  1. Interpolating surface based on rational blending function

    一類基於有理混合函數的插值曲面
  2. We also give the properties and the convergence of the two models. in the aspect of the fractal approximation of surfaces. we propose the improved quadrangular projected ifs ( qpifs ) model and quadrangular rational projected ifs ( qrpifs ) model

    在曲面的分形逼近方面，首先給出了改進后的四邊域曲面的投影迭代函數系統模型，然後給出了四邊域曲面的有理投影迭代函數系統模型。
  3. On the ground of educative theory, this paper exposits connotation and characteristic of project - based learning and why we should also enforce project - based learning in high school. as far as substance of project - based learning and objective circumstance what it should have are concerned, it points out the practical ability. at last, based on that university physics education has relatively longer cycle, it proposes stage pattern for enforce project - based learning and give two concrete cases, which discuss capacitance of confocal oval - shaped stylar capacitor and potential distribution of charged conductor of surface being uniparted hyperboloid

    本文在具體的教育理論指導下，闡述了研究性學習的內涵及特點；在大學物理中實施研究性學習的意義；以及就研究性學習的實質和所需具備的客觀條件而言，論述了研究性學習在高校中實施的可行性；並根據大學物理教育具有周期性相對較長和專業循序漸進的特點，提出了研究性學習的階段性模式，並給出了具體的實例，利用保角變換法討論了共焦橢圓柱形電容器電容及單葉雙曲面帶電導體的電位分佈。
  4. This thesis gives a brief account of the basic theories of software engineering and computer graphics, of the data structure of individual component modeling, of the design of the software structure and of the method of realizing software. meanwhile, this thesis put more emphasis on the exploration of the arithmetic of the delaunay triangle network, nurbs curve integration, the filling - in arithmetic of triple - tree, and the arithmetic based on the scan - line arithmetic and the filling - in of complex section

    文章介紹了關于軟體工程學與計算機圖形學的基本理論及其各組件模型的數據結構、軟體結構設計與軟體實現的技術方法，並重點討論了基於約束條件的delaunay三角網格化演算法、 nurbs （非均勻有理b樣條）曲面擬合、三叉樹等值線填充演算法和基於掃描線的復雜剖面填充演算法。
  5. Instead of the shape parameter a in c - b - splines, cosa, that is ck here, is used for the c - b - splines, and the definition interval of ck is extended to [ - 1, ) for the construction of catmull - clark subdivision surfaces

    而且，用它作為catmull - clark細分的前置處理，效果良好。 2 ）針對c - b樣條細分曲面形狀的調節范圍有限。
  6. The re technique is generally composed of 3 - d surface digitalization, data procession, surface reconstruction, cad 3 - d modeling and rapid manufacture, etc. the reverse engineering cad / cam system has broad industrial usage, and the research work has extremely theoretic and application importance

    Re技術通常涉及三維測量（表面數字化） 、數據處理、曲面重構、三維建模及快速製造等相關技術。逆向工程cad cam系統具有廣泛的工業用途，其研究開發工作具有較大的理論意義和應用價值。
  7. In the thesis. reading the iges file - 3 - and all the geometry entities and annotation entities are extracted ; on the base of geometry entities extracted, geometry entities are classified based to their three views. a new data structure is proposed to describle 3d form features ; inspection items of the workpiece are recognized ; the cmm - based inspection planning system is built ; on the other hand, as a part of cims, cmm need exchanging data with the software of cad / cam, so iges export interface is developed based on iges standard. in order to show the whole information of the surface, the 3 - dimensional free - form surface is drawing using the opengl

    通過讀取iges文件對實體進行分離、提取、識別出對工件進行描述的原始信息；在此基礎上，西安理工大學碩士學位論文提出一種優化演算法對三視圖自動進行分離，建立了一種對工件進行三維描述的數學模型，照此模型對工件進行立體重構；識別出工件的各種檢測信息，提出一種對公差信息進行描述的數學模型，井與三維立體相結合，生成有檢測意義的三維實體；根據三坐標機的測量系統，生成相應的檢測規劃；另一方面，作為cmis的一部分，應具有與cad cam軟體之間的數據交換功能，本文還開發了iges輸出介面，採用opengl繪制三維空間曲面，向用戶展示其全面信息。
  8. At last, he finally gets to reveal the mastermind behind his brother s death and he decides to take revenge for his brother. . it is said that the director of this film, patrick leung, is a student of john woo. it explains why this film resembles john woo s gangster films like

    當中猶以喋片警探李修賢在葉倩文家幻想自己是殺手周潤發並代入其心理情況思想一場和此片吳彥祖一而再地代入古天樂心理幻想的場面相似，頗有異曲同工之感。
  9. In the past decade, a lot of new work had been proposed to overcome the limitations of nurbs, such as triangular nurbs, t - spline, g - spline, rational gauss surface, and so on

    為克服nurbs的缺點，十年來，先後出現了很多新的設計方法，如三角域nurbs 、 t樣條、 g樣條和有理高斯曲面等。
  10. The two topics of agricultural civilization, preventing floods by water control and providing disaster relief, related to the existence and development of the chinese nation which were the two main issues of that time. the agricultural civilization also had the support offered by the natural and geographic factors of the huang river

    農業文明的治水和救災的兩大主題，是關繫到中華民族當時的生存和發展兩個方面的重大問題，它又有九曲黃河的自然地理因素支持，因此家天下的國家專制經濟社會成為必然。
  11. In the framework, a control mesh may be arbitrary one - dimensional or two - dimensional orientated topological manifold, and the curve or surface is defined on differential manifold homeomorphic to the control mesh with a potential function as its basis functions. this method is an extension of nurbs, which efficiently overcomes the limitations of nurbs

    廣義有理參數曲線曲面定義在與控制網格拓撲同胚的微分流形上，以高度一般的勢函數為基函數，其控制網格可以是任意的一維拓撲流形和二維可定向拓撲流形。
  12. Based on the review, the fluid flow and heat transfer in the curved circular and rectangular pipes have been researched by employing perturbation method and numerical simulation with a physical model under the rotational orthogonal curvilinear coordinate in a rotating curvilinear pipe with multi - parameters. we firstly analyzed the fully developed fluid flow and heat transfer, mixed convection heat transfer, the development of flow and heat transfer in the inlet in different cross section ( circular, elliptical, annular and rectangular crossection ). the variations of the secondary flow, axial velocity, distribution of temperature, the friction force on the wall, the ratio of friction factor as well as the nusselt number with different dimensionless parameters had been examined in detailed

    本文在總結和分析了一個世紀以來有關曲線管道流動和換熱特性的研究成果的基礎上，以旋轉正交曲線坐標系統下的多參數旋轉螺旋管道中的對流傳熱為物理模型，通過攝動方法和有限體積法，首次對各種截面（圓截面、橢圓截面、環形截面、矩形截面）旋轉曲線管道內充分發展流動的流動結構和傳熱特性（包括耦合對流傳熱特性）以及旋轉曲線管道開口段發展流動的流動結構和換熱特性進行了系統的數值模擬和理論分析，詳細討論了各種無量綱參數對管道內軸向速度分佈、二次流結構、溫度分佈、壁面摩擦力、摩擦系數比以及管道nusselt數的影響，獲得了若干創新性成果。
  13. The main products of our company are as follows : powder - painting equipments, electrophoresis equipments, aluminum - oxidation equipments, transportation and decontaminates and so on enamel equipments heat - welding powder painting equipments

    本公司專業產品有：粉末噴塗設備、浸塑設備、電泳設備、鋁氧化設備、曲面披覆設備、油漆塗裝設備、全自動前處理設備、輸送機設備、空氣凈化設備、搪瓷設備、熱熔結粉末噴塗設備。
  14. Rational curves and rational surfaces, which are a class of important approximation functions, are extensive applied in cad / cam

    有理曲線和曲面作為一類重要的逼近函數，在計算機輔助設計與製造中有著廣泛的應用。
  15. However, due to the complex of computation and the need of the design, sometime we need to use polynomial approximation for a rational curves and surfaces

    然而由於計算的復雜性和設計的需要，有時我們還需要用多項式函數來逼近有理曲線和曲面。
  16. In this paper, we survey the development of polynomial approximation of rational curves ( surfaces ) and state the knowledge of interval curves ( surfaces ) in the first chapter

    本論文中，第一章首先介紹了有理曲線曲面的多項式逼近研究工作的發展情況和區間曲線曲面一些相關知識。
  17. In this paper, it s applications were explained from seven different fields, the common zeros of two polynomials, the multiplicities of roots and the discrimination of a polynomial, searching the equations suitable for a algebraic number, implicating a rational curve over the plane, computing the zeros of a nonlinear algebraic equation and gathering the discrimination surface of the sas in automated theorem proving on inequalities

    本文從7個方面闡述了結式的應用，包括判斷2個多項式的公共零點，判定多項式是否有重根，計算多項式的判別式，尋找代數數滿足的方程，平面有理曲線的隱式化，非線性代數方程組求解和不等式機器證明中半代數系統邊界曲面的獲得等。
  18. Two methods are given. one is obtained by using degree reduction of interval rational bezier curves in two parameter directions according to the character of tensor product, which is called " single step method ". by comparison for degree reductions produced by the different order in two parameter directions, the relationships of the approximation results are discussed

    然後討論了矩形域上區間有理bezier曲面的降階問題，給出兩種降階演算法：一個是針對張量積的特點將問題轉變為兩參數方向的區間有理曲線的降階逼近，即「單步法」 ，並討論單步法沿兩參數方向不同次序降階的關系。
  19. In the final chapter, we discuss interval polynomial approximation of rational surfaces. firstly, we briefly state the interval - surface approximation based on the taylor expansion, and later, we give out a better interval - surface approximation based on the optimization method, which is also the main work of this paper

    第四章主要介紹了有理曲面的區間多項式的逼近，首先簡單介紹了基於泰勒展開來做的區間曲面逼近，後面是本文的主要工作，我們基於優化方法得到了更好的區間曲面逼近，它也是本文的重要部分。
  20. This paper studies the rational b - splines curves with prescribed poles and surfaces for the first time, and studies the properties of this new surface modeling. the result indicate that this modeling not only have the property of geometric modeling, but also have the agility and availability, and score the singular of curve

    本文首次構造了指定極點的有理b樣條曲線曲面，並深入研究了這種新穎曲面模型的性質，結果表明該有理曲面模型不僅具有幾何造型的特點，而且更靈活、更有效，並能刻畫曲線的奇性等固有特性
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