surface model 中文意思是什麼
surface model
解釋
表面法線。在三維圖形環境中垂直於景物模型表面的一條直線，通過計算表面法線和入射光線的夾角可得到光照程度。
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With the development of computer technology and free - form surface modeling, body plan description on the computer has been converted into hull surface model simulation in which more information is included so that hydrostatic properties calculation can be carried out with hull information directly
隨著計算機技術與復雜曲面造型技術的發展，計算機上的船體型線的描述，目前已發展成為三維曲面乃至三維曲面實體表達。與線框圖相比，三維圖形中包含的信息更為豐富，實現了計算機上船體模型的模擬。 -
Response surface model of proper dosage and exposure time of a broad spectrum fumigant, sulfuryl fluoride
硫酰氟熏蒸除鼠的投藥劑量與作用時間的響應面模型研究 -
From the model study of the fractal random rough surface, we acquire one dimensional ? two dimensional fractal random rough surface model with fractal theory ; 2. the calculation of the scattering field of light ; the establishment of the scattering light ’ intensity model, and the number calculation of the intensity distribute ; 3. the study on the laser radar cross section of one - dimensional fractal rough surface target ; and the number calculation of the scattering intensity of two - dimensional fractal the rough surface target ; 4. through shadowing effect, we analysis light scattering characteristic of fractal rough surface
本論文利用分形理論得到一維?二維分形隨機粗糙表面模型，研究光在一維?二維分形粗糙表面的光散射特性，主要從以下四個方面分析: 1 .自仿射分形隨機粗糙表面模型探討，採用分形理論得到一維?二維分形隨機粗糙表面模型; 2 .分形粗糙表面散射光場的計算和粗糙表面散射光強角分佈的模型建立和數值計算; 3 .一維分形粗糙表面目標的激光雷達後向散射截面lrcs研究和二維分形粗糙表面目標散射強度數值計算; 4 .引入遮蔽效應分析分形粗糙表面光散射特性。 -
An anisotropic time - dependent trinal - yield - surface model for the stress - strain - time behavior of soft clay
軟土各向異性三屈服面流變模型 -
Because 3d surface model contains huge number of triangles, a mesh simplification algorithm based on triangle edges shrinkages is presented in this paper to speed up the rendering in real time. in chapter four, the cutting of reconstructed 3d models is explored. in order to observe expediently the size and interspaces structure of inner tissues and avoid the discommodiousness of surface reconstruction, a simple cutting methods based on ray - casting algorithm is presented to get the inner images information
第三章主要對marchingcubes （ mc ）表面重建演算法進行描述， mc演算法是基於規則體數據抽取等值面的經典演算法，本文實現了這種等值面構建表面模型的演算法，並對其演算法的二義性進行了相應的處理；針對其重建速度較慢的問題，提出了體素間相關性處理的方法來加快重建速度；並對其生成的表面幾何模型所包含三角面片數量巨大的問題，提出一種快速有效的三角形邊收縮演算法進行網格簡化，提高了表面模型的繪制速度。 -
The key techniques for reverse engineering based on ct image are introduced. 3d reconstructed surface model does n ' t possess full geometry and topology information as solid geometry model. this dissertation presents an algorithm for rebuilding solid model from triangulated patch surface mod
介紹了基於ct圖象反求的主要技術；針對重建三維表面模型不具備象實體幾何模型的數據那樣的完備信息的特點，提出一種基於ct圖象的反求技術的實體幾何造型方法，將重建模型轉換為邊界表示的實體模型，並將其作為本研究所開發的特徵造型系統3dmodeler中的一種反求工程實體造型手段。 -
First, the author introduces some present product data models including wire frame model, surface model, solid model, and feature model, and some related product data exchange standards including iges, pddi, pdes, and step. the characteristics and shortages of the product data models and the product data exchange standards are analyzed in general
本文首先介紹了當前現有的產品數據模型，包括線框、曲面、實體和特徵模型，及相關的產品數據交換標準，包括iges 、 pdes 、 pddi和step ，分析了它們各自的特點和不足之處。 -
Furthermore, according to generalized plastic mechanics theory, a three yield surface model is researched basing on the experiment of other people and the shear yield surface in the stress lode angle direction is researched emphatically. by the new model, the fem program is also worked out in this paper
再者，本文在廣義塑性力學的基本理論框架下，在前人研究的基礎上，建立了一個土體的三屈服面模型，該模型更適合於數值計算，並在此基礎上著重研究了洛德角方向上的剪切屈服面。 -
With energy method, we can conveniently control the precision of the objective surface and add boundary constraints for preserving the model ' s global geometric continuity, but this method is very time - consuming. stiffness adjustment is the easiest method to be implemented and the fairing result is always satisfying except that the acquired surface editing is awkward. based on wavelets decomposition, the surface model ' s data size can be compressed efficiently and this method is running fast, however, the error and boundary constraints are difficult to be considered
其中基於能量原理的光順方法能夠方便地控制目標曲面的精度和邊界條件，從而能夠實現曲面模型的全局連續性，但是能量法的運算速度還有待提高；剛度調整法實現簡單，但是生成的曲面的可編輯性較差；小波分解方法計算速度很快，能夠有效地實現數據壓縮，但是其逼近誤差和邊界條件卻難于控制。 -
Digital surface model, dsm
數字表面模型 -
The images will be zoomed in by interpolatory subdivision and no intermediate continuous surface model should be established
該演算法無須建立中間連續圖像模型，能自適應地插值，而且插值系數可為任意正實數。 -
On the basis of the work in xie et al. 5, xie et et al. 7 and liang et al. 8 established a dynamic repre - sentation of the groundwater table in a land surface model through reducing it to a moving boundary problem and solving it by the mass - dumped finite element method
基於以上工作，謝正輝等7 ， liang等8通過將地下水位動態表示問題歸歸結為運動邊界問題，用有限元集中質量法直接求解，建立了地下水位的動態表示模型 -
This thesis study the space surface model and approximation system of the blade of steam turbine
本文對汽輪機葉片空間型面擬合和逼近系統進行了較系統的研究。 -
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。 -
The core contents of digital power transmission network are to build the true three dimension scene of objective region, to search for the transmission equipments and to operate them in the scene interactively. according to the two main kinds of three dimension digital models ( earth surface model and transmission equipment model ), this thesis describes a simplifying method depended on view - point : it accomplishes displaying and flying over a large area of true earth surface with level of detail model based on block - binary tree. and it realizes " the efficient display of abundant data of equipment models and interactive management by the method of combination of models and images
構建目標區域的真實三維場景，並在場景中對輸電設備進行查詢和交互操作是數字輸電網路的核心內容，本文針對數字平臺中兩種主要的三維數據模型? ?地表模型及輸電設備模型提出了基於視點的簡化方法：用塊? ?二叉樹結構的動態細節層次模型解決了大區域真實地形的顯示及漫遊方法；用失柵結合的方式實現了對海量設備模型數據的高效顯示及交互管理的功能。 -
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。 -
Development of a land surface model in the climate system
氣候系統陸面分量模型發展應用 -
The first one is to study the relationship between soil moisture and precipitation over the shiguanhe river catchment in the summer of 1998 and 1999. the second part is to evaluate the performance of a modified bats land surface model by offline experiments
第一部分是研究我國史灌河流域土壤濕度和降水的關系；第二部分是改進的bats陸面模式獨立試驗；第三部分是改進的bats模式敏感性試驗。 -
Using latest visual software idl ( interactive data language ) and combining trigrid function with triangulate function in idl, regular network terrain model and 3 - d shallow and deep sliding surface model of zhafangping landslide body based on delaunay triangular network is set up. it makes the sliding surface turn from " recessiveness " into " dominance ", and gets numerous different three - dimensional cubic chart, contour topographic map, the combine model of terrain model and contour topo - graphic map. and every visual model has analysed and compared in detail
利用可視化軟體idl中的triangulate函數和trigrid函數相結合，建立了基於delaunay三角網的榨坊坪滑坡體規則格網地面模型和淺層、深層滑動面三維可視化模型，實現了該滑坡體的三維模擬與再現，使滑動面由「隱性」變為了「顯性」 ，且獲得了眾多不同角度的三維立體圖、等高線地形圖和地面模型與等高線地形圖的組合圖等，並對各可視化模型進行了詳細地分析與比較。 -
The two key factors, machining methods and machine - setting parameters of sbg, which are related with the generation of theoretical tooth surface and topographic deviation for sbg, are analyzed in details. after building the machine - tool mathematical model and computing the tooth surface parameters, using the given conditions and mesh equation, the coordinates of the theoretical tooth surface of sbg can be computed, and, then, the theoretical tooth surface model of sbg is derived
本文詳細地分析了形成螺旋錐齒輪理論齒面及產生拓撲誤差的兩個關鍵因素，即螺旋錐齒輪的切齒加工方法和機床調整參數;通過建立機床數學模型，計算齒面參數，用已知條件和嚙合方程進行聯合求解，得出了理論齒面的坐標值，從而獲得了螺旋錐齒輪的理論齒面模型。
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