割曲面法 的英文怎麼說

中文拼音 [gēqūmiànfǎ]
割曲面法 英文
cutting surface method
  • 割 : 動詞（截斷） cut; mow
  • 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...
  • 法 : Ⅰ名詞1 （由國家制定或認可的行為規則的總稱） law 2 （方法; 方式） way; method; mode; means 3 （標...
  1. Round these two respects, how to structure security elliptic curve cryptography and the implementations of ecc is first discussed in this paper. then we have analysed especially the scalar multiplication on the elliptic curves, and present a new algorithm to quickly implement the fixed point scalar multiplication according to the idea of interleaving exponentiation algorithm and power division. this algorithm is much faster than fixed - base windowing method ; and a little faster than fixed - base comb method

    圍繞這兩個方面的問題，本文首先討論了如何構造安全的橢圓曲線密碼體制和橢圓曲線密碼體制的應用；然後重點分析了橢圓曲線上數乘運算的快速實現，並結合interleavingexponentiation演算法和冪分割的思想，提出一種計算固定點數乘的快速演算法，該演算法的計算速度明顯快于fixed - basewindowing演算法，稍快于fixed - basecomb演算法。
  2. The first one is based on the offset surface of subdivision model. through mapping the original mesh node by node, the offset surface is generated. it can get the interference free tool - path directly from the offset surface without complex interference check and process

    然後實現了兩種精加工刀具軌跡生成方法，一種是基於等距面的截平面法，通過點對點法向映射的方法生成遞歸分割曲面模型法向等距面，由該等距面生成無干涉刀具軌跡。
  3. For all long, however, they have been divided up in routine design that is taken at large by engineers, i. e., the rigidity relation and deformation correspond thereof are not considered so that the deformation and displacement from foundation are neglected, which will result in errors neglecting the restrained function to the warp of foundation due to the rigidity of the upper structure and the secondary stress of the upper structure because of different settlement from the foundation

    而長期以來，工程界普遍採用的方法是將上部結構、基礎以及土體分割開來，不考慮各部分之間的剛度聯系和變形協調，忽略了基礎的變形和位移，從而忽略了上部結構剛度對基礎翹曲的限製作用，以及基礎的差異沉降對上部結構引起的次生應力，因而在安全性和經濟性方面都存在缺陷。
  4. On the assumption of ignoring the distortion of thickness, this paper determines the rough shape by the geometric modeling method of equal area developing using mixed mesh cell of triangle and quadrangle for the first time, presents the equal area developing arithmetic of quadrangle - triangle. on the virtual geometric symmetry axis, we puts forward the method of determining the developed coordinate of the point on the base band in the development of using regular quadrangle cell, determines the developed shape of internal structure in plane utilizing point - to - point mapping theory. furthermore, we realize the approximate developing of undeveloped - irregular boundary surface using a few triangle cells

    本文結合型號研製中小曲率機翼整體壁板類零件坯料展開課題，基於板料厚向變形忽略不計的先驗假設，首創混合四邊形-三角形網格等面積展開的幾何模擬法確定壁板類零件毛坯外形，給出了混合四邊形-三角形網格等面積展開演算法；提出了虛擬分割線的概念，採用虛擬幾何對稱軸，給出了規整四邊形單元展開基帶上結點的計算方法；採用映射原理和求交演算法確定了壁板內部結構信息的展開定位。
  5. The surface of conventional engineering part is composed of simple analytical surfaces and four - boundary ruled surface primarily. therefore a point cloud segmentation method based on those feature surfaces is proposed. several algorithms to identify the simple analytical surface feature are investigated and discussed

    常規工程零件的外表面中包含了大量的特徵曲面，如簡單解析曲面和四邊直紋面，因此，本文提出基於特徵曲面的的點雲分割方法，研究幾種識別簡單解析曲面的演算法；研究由點雲擬合b spline和b zier曲線的理論基礎，總結曲面擬合的幾種方法，提出一種反求定半徑滾球圓角的方法。
  6. This thesis discusses the problem free - surface modeling technique of turbine blade according to the property of the runner blade and the present research achievement in free - surface modeling technique, the major study concerned are introduced below : firstly, it accomplished the study of intersection for blade - to - plane and present the method of three - step algorithms such as subdivision > iterative refinements approach ; meanwhile it solved the problem of small area extend of blade by use minimal modulus method

    本文針對水輪機葉片的特點，結合曲面造型技術的研究現狀，研究了水輪機葉片的nurbs曲線曲面造型問題。主要工作有：第一，完成了葉片與任意平面求交問題的研究，提出分割-迭代-擬合三步求交演算法。同時首次應用最小二乘擬合端部法解決了葉片的小區域延展問題。
  7. At the same time, hierarchy intersection is applied for unified classification, and for tracing the intersection curve to overcome degenerate cases that occur frequently in practice

    同時採用層次求交和交線跟蹤的方法，保證曲面片分割和區域分類的一致性，從而克服了實踐中常見的退化情況。
  8. A new lom process, in which the slice sheet is cut along the tangent of normal section line in z - axis direction, is proposed to reduce the theoretical manufacturing error and remaining material quantity

    為減小造型誤差，提出了新lom方法，即沿過分層板中點造型曲面z向法截線的切線切割分層板。
  9. As a highly efficient and succinct scheme, the subdivision surface has been widely used in the field of computer graphics and 3d surface modeling. to extend its application in industry, the tool path generation algorithm and simulation for 3 - axis nc machining of the subdivision surface model is studied. two interference - free tool - path generation algorithm using ball - end mills in 3 - axis machining are developed

    遞歸分割曲面建模方法因為其簡潔、高效等特點廣泛應用於計算機圖形學和曲面造型等領域，為了推廣它在工業中的應用，本文研究遞歸分割曲面模型的數控加工刀位計算及模擬，實現三坐標球頭刀數控加工的刀具軌跡生成和加工過程模擬，並對加工結果進行誤差分析。
  10. In chapter 5, two new c - t algorithms are proposed for geometric reconstruction, one of which adopts b - b patches on triangles and the other bezier patches on rectangles

    第五章針對任意拓撲曲面的幾何重建問題，提出了兩種新的c - t分割演算法：一種採用了三角域上的b - b曲面，另一種採用了矩形域上的b zier曲面。
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