triangular surface 中文意思是什麼

triangular surface 解釋
三角曲面
  • triangular : adj 三角（形）的；由三個部分構成的，三重的；三方面的（斗爭等）；三國間的（條約等）。 triangular c...
  • surface : n 1 表面；地面；水面；廣場，空地。2 外觀，外表，皮毛。3 【幾】面；切口；【航空】翼面。adj 表面的...
  1. The problem of triangular mesh based c2 - continuous piecewise bi - cubic b - spline surface reconstruction has been studied

    對分片雙三次b樣條曲面重建問題進行了研究。
  2. Due to the importance of the accuracy of the time - domain impedance matrix elements, the techniques by which treating of the singular integrals and near singular integrals arose from the tdie - mom solving process are analyzed in detail, and these techniques are utilized to solve the tdie. in the end, using triangle patches discretizing arbitrarily 3 - d dielectric objects and metal - nonmetal composite objects surface and utilizing spatial rwg and temporal triangular bases, the tdie are solved by mot algorithm

    最後，分別對三維介質目標、金屬非金屬組合目標散射體表面用三角貼片離散，並在空間上採用rwg基函數，在時間上採用三角型時間基函數、利用阻抗元素的精確演算法計算出阻抗矩陣，再運用mot法分別求解了介質體目標，金屬非金屬組合目標的時域積分方程，並分析了金屬非金屬組合目標分界面上的等效電流與等效磁流的特性。
  3. 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。
  4. Basically like “ adaptive approach ”, the method can control triangulation density with respect to the change of normal curvature of the surface generating a small number of triangular facets, and thiny triangles, degenerate triangles and “ cracks ” in 3d space will not occur, but the speed of the algorithm is higher than that of adaptive one

    該方法基本上可以像「自適應」方法一樣，根據曲面的法曲率變化來控制三角化剖分的密度，生成的三角片數量較少，並且可以避免在三維空間產生狹長的三角形、退化三角形與「裂縫」 ，運行速度明顯比自適應方法快。
  5. Triangular carrier, herringbone carrier, c type buckle carrier and relevant suspended pleces, bridge pleces are made from galvanized steel. to ensure the level of suspended ceiling all these products. featuring in high strength, have flatness and dead load capacity meeting national standards. u - shape buckle carrier made from aluminum material or colored steel has the advantages such sa easy assembly, strong load bearing capacity and even surface

    三角骨，人字骨， c型條扣板骨及相關吊件，連接件均採用鍍鋅鋼製造，產品強度大，平直度和靜載能力超越國家標準要求，從而確保吊裝的平整性。 u型扣板骨採用鋁質或彩鋼等材料製造，達到裝配簡便，承受力強，表面均衡的效果。
  6. Through the analysis and calculation the conclusion can be made that during the process of the timbering of excavation, the magnitude of soil stress decreases with the increase of the displacement on the base of the still earth pressure, and the earth pressure distribution varies from the triangular distribution of the still earth pressure to other distribution with the displacement of the timbering structure. the thesis introduces the bedding coefficient in the horizontal direction varying with the soil displacement from soil - structure interaction mode, therefore calculation can be made to get more rational calculation result using elastic foundation finite element method which is the same to timbering structure both upwards and under excavation surface

    通過分析計算可以得出，在基坑支護過程中，土壓力的大小在靜止土壓力值的基礎上隨支護結構向坑內側位移增大而減小；土壓力的分佈由靜止土壓力的三角形分佈隨支護結構位移變化成其它分佈；由土-結構共同作用模式引入隨土體位移變化的水平向基床系數，使支護結構在開挖面以上部分同以下部分一樣，均可採用彈性地基有限元法進行計算，得出更為合理的計算結果。
  7. 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。
  8. A new method that can be used to analyze the developability of a curved surfaces " mesh is proposed based on gaussian theory of mapping a curved surface onto a unit global surface. 3. a new method is proposed to homo - topologically map a triangular finite element mesh into a planar shape based on the assumption that the surface deformation is continuous and homogeneous

    3 、根據曲面變形連續均勻的特點，提出了一種基於單元等變形的三角形曲面網格拓撲等價映射演算法，將可展曲面與不可展曲面的網格採用統一的形式展開到平面上。
  9. After research surface reconstruction with triangular facets, contours of first layer and the last layer are triangulated with layer separation algorithm firstly. and then the least polar - angle criterion is presented for linking two convex contours, and the method is also given in which non - convex contour is transformed to a set of convex contour. with the splitting and integrating algorithm, the single - to - multi - contour reconstruction with triangular facet has been simplified to one - to - one contour

    首先採用層析式演算法對起始層和結束層中的輪廓進行三角剖分；然後採用最小極角法實現兩凸輪廓間的三角片重構，並討論了非凸輪廓變換為凸輪廓的方法；最後，使用分裂與合併技術將單輪廓匹配多輪廓的三角片重構簡化為單輪廓之間的三角片重構，最終完成整個骨骼表面的三角片重構。
  10. Standard test method for rubber deterioration - surface ozone cracking outdoors or chamber triangular specimens

    橡膠變質的標準試驗方法.室外或小室內橡膠表面臭氧龜裂
  11. The moment method is used to calculate the rcs of three - dimensional targets in this paper. these targets include conducting targets, dielectric targets and coat targets. triangular patches are used to model the surface of the target, then electric field integral equation ( efie ) and magnetic field integral equation ( mfie ) are built which satisfy the boundary conditions. the rwg vector base functions are used to denote equivalent electric current and magnetic current on the surface of the target. finally use the galerkin method ( rwg vector base functions are basis function and test function ) to transform integral equations into matrix equation. when obtain the equivalent electric current and magnetic current, we can calculate the scattering field and the rcs of the target

    本文利用矩量法計算了三維導體目標、介質目標、塗層目標的雷達散射截面。首先採用三角形面元對物體表面幾何形狀進行模擬，然後建立滿足邊界條件的電場積分方程（ efie ）和磁場積分方程（ mfie ） ，將物體表面的等效電磁流用rwg矢量基函數表示，最後利用伽略金法（ rwg矢量基函數既作為基函數又作為檢驗函數）將電磁場積分方程轉化為矩陣方程求解未知電磁流系數，得到了表面的等效電磁流后，可以計算散射場和目標的雷達散射截面。
  12. Adaptive triangular mesh generation of ship hull surface based on nurbs

    的船體曲面自適應三角網格剖分
  13. Surface reconstruction is one of key techniques in reverse engineering. based on unorganized discrete points come from finite element analysis triangular mesh on exterior surface of the aeroengine hollow turbine blade, this dissertation studied some related problems, such as scattered data preprocessing, quadrangle partition and surface reconstruction technology

    曲面重構是逆向工程研究的重要內容之一，本文基於航空發動機空心渦輪葉片外表面的有限元三角網格離散點，對離散數據點的預處理、四邊域劃分及曲面重構技術進行了研究。
  14. In this way, the surface integral expression of spatial triangle can be obtained with triangular mesh subdivision of the closed surface, constructing isoparametric transformation, building 1 - 1 corresponding relationship between spatial and standard triangle

    構造等參變換，建立任一空間三角形與標準三角形的1 - 1對應關系，推導出空間三角形上的曲面積分表達式。
  15. The quality of reconstructed surfaces is related to many factors, such as quality of original data and surface fitting strategy, surface post - processing, and so on. in this thesis, the relative techniques of high quality surface reconstruction and surface interrogation based on triangular mesh are studied in depth. the main contents are as follows : ( 1 ) typical mesh smoothing schemes are analyzed

    本文對基於三角網格模型的高質量工程曲面重建及曲面光順性分析的相關問題進行了研究，主要內容包括: （ 1 ）在對現有幾種常用的三角網格模型光順演算法進行分析比較的基礎上，結合圖像處理中的kuwahara濾波以及雙邊濾波思想，提出了基於法矢修正的三角網格模型光順演算法。
  16. Then, the dielectric targets ' electromagnetic scattering is researched. an important principle of electromagnetic field theory - - equivalent theory is introduced. as well as the conducting target, the geometrical model of the dielectric target should first be built, then triangular patches are used to model the surface of the dielectric target. different from the conducting target, there has not only equivalent electric current but also has equivalent magnetic current on the surface of the dielectric target. so now should built two equations - efie and mfie to obtain the unknown current coefficients. the rcs of dielectric sphere, dielectric cylinder, dielectric cube are calculated respectively

    其次，本文研究了介質目標的電磁散射，介紹了電磁場理論的一個重要的原理? ?等效原理。與導體目標一樣，先建立介質目標的幾何模型，然後用三角形面元模擬介質表面。與導體目標不同的是，在介質表面除等效電流外，還有等效磁流，因此需建立兩個方程? ?電場積分方程（ efie ）和磁場積分方程（ mfie ）來求解未知的電磁流系數。
  17. Two cases are analyzedxonducting target with coat and dielectric target with coat. for the conducting target with coat, triangular patches are used to model the surfaces of the coat and the conducting object. now there have equivalent electric current and magnetic current on the surface of the coat, but only has equivalent electric current on the surface of the conducting object. the rwg vector base functions are used to denote equivalent electric currents and magnetic current. three integral equations should be built to obtain the unknown current coefficients ; for the dielectric object with coat, triangular patches are used to model the surfaces of the coat and the dielectric object. now there have equivalent electric current and magnetic current not only on the surface of the coat but also on the surface of the dielectric object. this time four integral equations should be built to obtain the unknown current coefficients

    對于塗層導體目標，將塗層外表面和導體外表面進行三角形面元剖分，在塗層外表面有等效電磁流，導體外表面僅有等效電流（無等效磁流） 。將這些等效電磁流用rwg矢量基函數表示，需建立三個積分方程來求解未知的電磁流系數；對于塗層介質目標，將塗層外表面和內層介質外表面進行三角形面元剖分，在塗層外表面有等效電磁流，內層介質外表面也有等效電磁流，這時需建立四個積分方程來求解未知的電磁流系數。
  18. A survey of parametric scattered data fitting using triangular interpolants. curve and surface design, h. hagen ed., springer - verlag, 1992

    2在每條邊界曲線上指定相應的二次法向量，其與邊界曲線的切向量相垂直。
  19. The solution to the correspondence problem is important for reconstruction of surface from contours, especially for validity of topology of the reconstructed triangular mesh

    輪廓對應問題的解決是基於輪廓數據曲面重構的關鍵工作，是保證重建網格模型拓撲關系正確性的基礎。
  20. The parametrization work of eck et al., and the b - spline construction scheme of peters. the main contribution of this procedure are : it presents a combinatorial optimization method for builing a quadrilateral domain from a triangular one ; it presents an efficient method for fitting a gl b - spline surface of arbitrary topological type to unorganized points ; it introduces a scheme for adaptive refinement of the quadrilateral patch network

    論文工作利用了以前hoppe的表面重構工作， eck的參數化工作和peters的b樣條重構方案，主要貢獻在於：提出了從三角形域構造四邊形域的組合優化方法；提出了從無序點重構具有任意拓撲結構g1連續nurbs曲面的有效方法；提出了四邊形網格自適應細分的方案。
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