節曲面 的英文怎麼說
中文拼音 [jiéqūmiàn]
節曲面
英文
pitch surfaces-
So far, the main frame of the conjugation of betrand are established, on the basis of which, it is given that the primary condition the directrix line must be satisfied, the relative curvature of the conjugating surfaces, the relations between non - interventional condition and curvature axle of the directrix line, and so on. the transmission of normal circular - arc gear is a typical bertrand conjugation. in order to promote the transformation from theory to technology, the general principle of this kind of transmission is studied
為了使研究更加貼近於工程，便於解析處理，提出準面的概念，並確立由準面到準線的研究路線，給出了各種傳動形式下準面與準線的具體特徵，證明了共軛準面上兩準線的誘導測地曲率等於零的這一不干涉條件，進而指出，當準面為平行軸和相交軸傳動的節曲面時，不干涉條件自然滿足。Corneal surfaces in eyes with regular astigmatism are thought to be toroidal surfaces. based on mathematical models for corneal surfaces before and after treatment, a corneal ablation model is given for such refractive errors as spherical myopia, compound myopic astigmatism, and simple myopic astigmatism. a similar corneal ablation model is also given for such refractive errors as hyperopia, compound hyperopic astigmatism, and simple hyperopic astigmatism
採用超環面（ toroidalsurface ）建立起規則散光下的角膜曲面模型方程;定量研究了手術光學區屈光不正兩種通用的矯正模型，一種模型適用於單純近視、復性近視散光、單純近視散光的矯正，另一種模型適用於單純遠視、復性遠視散光、單純遠視散光的矯正;另外，作為影響手術效果的重要因素，提出了一種用於光學區直徑和過渡區寬度均可調節時過渡區角膜切削量的計算模型。The directrixes of the in former two transmissions are the loxodrome and the geodesic on the pitch cones, that of the latter is an equal - pitch line along the direction of straight generatrixes in the hyperboloid surface, also is the vertical trajectory of the straight generatrixes
前兩種傳動形式的準線分別為節錐面上的斜航線與測地線，後者的準線為單葉雙曲面上沿直母線方向的等螺距曲線，且為直母線族的正交軌線。Computer aided geometric design, 1989, 6 : 323 - 358. 7 seidel h p. symmetric recursive algorithms for surfaces : b - patches and the de boor algorithm for polynomials over triangles
2三角b樣條曲面的曲率分佈具有「節點線」現象，也就是說在其曲率在三角面片的邊界上有「聚集」現象。The simple story is in the world of the animation is an absolute main factor, a complicated story details turns and twists confusing link for see an animation of the audience is a tremendous burden, the market need that is in present the top interest has already replaced a traditional story to spread chen, at this interest in command age how expressed a plot to become the most important topic with the simple story, very clearly, advertise from the film of the way can feel what kind of the topic just is the need of the consumer, passed by high cost to create greatly of the advertisement mode has already not been reseen this several years, take but the generation is a film to have many interests much play, this be the typical simple story description complicated plot, give examples to say : the movie “ shrike ” is a very typical example, pure of save a princess of plot, continuously of pound at audience by the plot of " be contrary with traditional thinking " of thinking mode, i still remember at that time see that slice through behind appear details of hear the public discussion interest continuously, but hear half personal say this drama of story have much good, in fact such manuscript was the best animation manuscript, letting the audience acquire they want of plot but don ' t be pack with complicated story, this just is the animation dramatize of the tallest state, because of would like to spend money to enter into theater or spend money to purchase dvd consumer, all is want to open happy heart ' s appreciating film bear, have no burden, also be spend money to buy happy, want to remind specially of " the writing animation manuscript not is write to personal satisfy own creations desire but is face all appreciate of crowd "
在動畫的世界里簡單的故事是絕對的要素，一個復雜的故事情節曲折迷離的環節對于看動畫的觀眾是一項極大的負擔，在現今的市場需求上趣味已經取代了傳統的故事鋪陳，在這個趣味掛帥的年代怎麼樣用簡單的故事來表現劇情變成了最重要的課題，很明確地，從影片廣告的方式可以感受到什麼樣的主題才是消費者的需求，過去高成本大製作的廣告模式這幾年已不復見，取而代之的是影片有多趣味多好玩，這就是典型的簡單故事描述復雜的劇情，舉例來說：電影史瑞克就是一個很典型的例子，單純的救公主的劇情，不斷的以「與傳統思維相反」的劇情沖擊著觀眾的思考模式，我還記得當時看完該片后出場不斷的聽到眾人討論趣味的情節，但是卻沒有聽到半個人說這部戲的故事有多棒，其實這樣的劇本就是最好的動畫劇本，讓觀眾獲得他們想要的劇情卻不以復雜的故事包裝，這才是動畫編劇的最高境界，因為願意花錢進到戲院或是花錢購買dvd的消費者，都是想開開心心的觀賞影片沒有負擔、沒有包袱，也就是花錢買開心，特別要提醒的「寫作動畫劇本並不是寫給個人滿足自己的創作慾望而是面對所有欣賞的人群」 。Evaluation algorithm and knot insertion algorithm for b - spline surfaces
樣條曲面的求值和節點插入演算法研究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。The thesis tells surface analysis method including curvature analysis and curve depth analysis that we using in the skin restoring project. in chapter 2, it tells the definition of b - spline curve and surface and the fundamental algorithm - de boor algorithm for points of curve and surface. as to reconstruct surface from ct data, we discuss some basic algorithm and introduce the wrapping skin algorithm
在第二章中，介紹了b樣條曲線曲面的定義及基本演算法- -求曲線曲面點的德布爾演算法；基於ct數據的曲面重構，討論了重構過程中所應用到的基本演算法（如節點插入及消去演算法、曲線的反算方法等） ，並介紹了曲面重構中常用的蒙皮法。Its accomplishment is simple and intuitional. the main innovation of this method is that we only need construct a symmetric zonal mesh for each interpolated curve respectively and write appropriate knot spacings for mesh edges. then applying nurcc rules to the initial control polygonal mesh consisting of those symmetric zonal meshes can generate a surface that satisfies interpolation constrains
該方法的主要創新思想是在被插值曲線的控制多邊形兩側構造具有簡單對稱性質的四邊形網格，稱為對稱網格帶，但關鍵還在於對網格邊賦予適當的節點距，並對由這些對稱網格帶組成的初始控制網格應用非均勻有理catmull一clark細分規則，來生成滿足插值要求的曲面Nurbs surfaces with single interior knots are simple and used widely. the thesis main aims at biuquartic, biquintic, k x fc - degree b - spline surfaces and bicubic nurbs with single interior knots. one of the contributions is to apply knot refinement and the geometric continuous conditions of bezier surfaces to deduce the geometric continuous constraints of nurbs patches and obtain the intrinsic equations of common boundary curves, where the intrinsic equations are the special phenomena of nurbs surfaces
節點向量是內部單節點的nurbs曲面是最簡單也是最常用的，本文重點針對單節點的雙四次、雙五次和雙k次b樣條曲面及雙三次nurbs曲面，運用節點插入技術和b zier曲面的幾何連續理論成果，導出了它們之間的幾何光滑拼接條件，同時得到了公共邊界曲線所必須滿足的本徵方程，其中本徵方程是nurbs曲面所獨有的現象。Another algorithm is based on pixels : sample many points along the curve, round them to the nearest integer and set each pixel the computed point falls in. although this algorithm uses integer arithmetic, it provides the smooth curve possible at the expense of computation time as many points have to be computed to ensure that no gaps are created along the curve. furthermore these two algorithms we mentioned above is appropriate for low degree parametric curves, for high degree parametric curves, we usually approach them by using low degree rational parametric curves, the generating curve ' s fairness property is not very good
我們知道當節點矢量的兩端節點均為k重節點且無內節點時， b樣條基函數退化為bemstein多項式，因此該生成演算法還可推廣到b能ier曲線中，具有廣泛的應用價值、同樣地，在cad和cagd中，有理b樣條曲線，特別是非均勻有理b樣條曲線（ nurbs ）已經成為曲線曲面設計中最廣為流行的技術，然而對這些曲線目前也尚無很好的曲線生成演算法，因此有理b樣條曲線的生成演算法無疑有著更重要的意義This paper presents the means of obtaining the parameter of signal converter and formulas for achieving the value of every parameter through math illation. the design means for band - pass filter involved in this subject is discussed and particularly, the steps and formulas for designing butterworth band - pass filter are expounded and the transfer - function of band - pass filter used in this subject are also given
通過神經網路的曲面擬合，很好地解決了本課題中所涉及的多個相互耦合的被測參數的解耦問題和標度變換問題，同常規s型非線性響應函數bp神經網路數據擬合相比，減小了計算量，節省了檢測系統在檢測過程中的計算時間，擬合結果表明。Current nod external nomal method can accurately solve the initial clearance of contact curved surface. the accurate analysis of load distribution, longitudinal load dispersion and contact patterns to spiral bevel gears has been deduced, and that the variation of the contact center of loaded spiral bevel gears and the contact center of non - loaded spiral bevel gears has been analysed
當前節點外法矢法可以精確計算接觸曲面的初始間隙量，本文用這一方法對螺旋錐齒輪齒間載荷分配、齒向載荷分佈以及接觸區形狀進行了精確分析，而且分析了加載情況下螺旋錐齒輪齒面接觸中心點軌跡與無載下螺旋錐齒輪接觸軌跡的變化。In order to generate tool - path quickly, another method is presented. it can generate interference free tool - path directly from the section line of the triangulated surface model. search each vertex of the model to get the triangles which may be interfered using the radius of the cutter
為了解決這一問題，本文又提出了基於加工曲面的截平面法，通過刀具投影和曲面模型節點坐標的位置關系確定可能發生干涉的小三角片的集合，以加快乾涉檢測的速度，然後在這個集合上生成無干涉刀位點。Profile curves of a rounding surface are calculated along a feature line with a given radius. then inner elements of a rounding mesh is created with these profile curves, and sewn with the original mesh which is pre - trimmed. a feature - based mesh modification method is proposed for existing rounding feature
給定圓角半徑，計算出沿特徵線圓角曲面的截面輪廓線，以輪廓線的六等分點為節點生成圓角區域單元，並與剪裁后的基網格面縫合，從而生成沿特徵線的圓角曲面網格。With this approach, the surface model can approximate inner scattered points and interpolate boundary conditions while keeping the global gl continuity. actually, the study on the theory and technology of b - spline surface reconstruction with complicated boundary constraints is an essential and innovative point of this thesis
實際的運行例子表明，基於這種方案創建出來的曲面模型不僅能夠可調節性地逼近區域內部的散亂數據點，而且同時能夠插值于要求的邊界約束條件，從而保證整個曲面模型的全局g連續性。A rapid manufacture technique of large moulds for sheet metal forming was presented, which was based on discrete cavity mould ( dcm )
摘要提出了基於離散型面模的毛坯曲面構件快速成型技術，並介紹了離散型面調節機械手的構成與工作原理。3. again applying the idea of singular blending to case of surfaces, a nuat b - spline interpolating blending surface is constructed by a explicit means and maximum distance between the interpolating surface and singular bilinear patch can be adjusted by the blending parameter similar to the case of the curve above. furthermore, some singular elements such as edges 、 ruled surfaces and plane can be conveniently embedded in the interpolating blending surface
3 .將奇異混合思想應用到曲面插值上，提出了nuatb樣條曲面混合插值方法，該方法不僅給出了插值的顯格式，而且在插值曲面中可任意鑲嵌棱邊、直紋面或平面，利用混合因子，調節插值曲面與相應奇異雙線性曲面片之間的最大距離Abstract : a new data structure that one link - list was composed of polygon - surface table, edge table and vertex table was proposed to describe the geometry information and topology information of control polyhedron m in the rese arch of modeling with closed surface. compared with other structures which were a pplicable to the work, the structure was understandable, economize and conveniently to modify. after describing the detail of the geometry information, topology inf ormation included in the tables of polygon - surface, edge and vertex, and the poin t - link form of the adjacency multilist between the tables, a concise instance was given in clanguage array
文摘:介紹了在閉曲面造型研究中，為描述控制多面體m的幾何信息和拓撲信息而設計使用的一種單鏈三表的數據結構.與其他適用與描述控制多面體的數據結構相比，該結構在結合了鄰接多重表方法后的特點是:關系描述清楚，節省存儲空間，方便查找和交互修改形體.在介紹單鏈中三表（面表、邊表、頂點表）所含的幾何信息細節、以及單鏈的三表之間的表示面、邊、頂點拓撲關系的指針的鄰接多重連接方式之後，本文給出了以c語言數組方式簡明描述的數據結構實例I especially like the several scenes in which she acts like a normal girl and has some funny moments with jong - du. these scenes are probably her imagination. the only thing i don t like is that the director sometimes spends too much time to capture her seemingly meaningless gesture, which slows down the pace of the movie a lot
文素利扮演痙攣人士也很出色，沒有破綻，全片九成時間都以扭曲面容和動作演戲，她也演得靈活，只是因為她的動作和說話速度真的很慢，略嫌編導有時會花太多時間拍攝她無意義的身體動作，節奏太慢。分享友人