field surfaces 中文意思是什麼

field surfaces 解釋
田徑運動場地面
  • field : n 菲爾德〈姓氏〉。n 1 原野，曠野；（海、空、冰雪等的）茫茫一片。2 田地，牧場；割草場；〈pl 〉〈集...
  • surfaces : 表面；曲面
  1. It is not hard to conclude that the theory can also be used to solve the problem of reparametrization of curves and surfaces. the fifth part is the expression of normal curves and surfaces in the form of bsc and bbc. the last part involves the applications of the theory of bsc and bbc curves and surfaces in the field of reparametrization of curves and surfaces and entitative modeling

    主要研究bbc函數的構造、表示和性質， bbc曲線曲面的表示方法，曲線曲面的參數方程以及它們的性質和特徵， bbc曲線曲面b zier曲線曲面的關系， bbc曲線曲面的相關演算法；第四部分是tbsc和tbbc曲線曲面理論，涉及tbsc和tbbc函數的概念， tbsc和tbbc曲線曲面的方程及其與b樣條曲線曲面以及b zier曲線曲面的關系；第五部分是常用曲線曲面的bsc和bbc表示；第六部分是bsc和bbc曲線曲面理論在曲線曲面重新參數化中的應用和實體造型中的應用。
  2. 2 2 chemical disinfectants and antiseptics - quantitative surface test for the evaluation of bacterial activity of chemical disinfectants and antiseptics used in the veterinary field on non - porous surfaces without mechanical action - test method and requirements phase 2, step 2

    化學消毒劑和防腐劑.獸醫領域無機械運動無孔表面用化學消毒劑和防腐劑的細菌活性評價用定量表面試驗.試驗方法和要求
  3. Abstract : in the field of optical wireless links, concentrators that are designed by the tools of nonimaging optics can be used to collect the light radiation and are more compact and have higher collection efficiencies than imaging concentrators. hemispherical concentrators are studied by ray tracing, then for several normal nonimaging concentrators : hemispherical concentrators, compound parabolic concentrators ( cpc ), dielectric totally internally reflecting concentrators ( dtirc ), simultaneous multiple surfaces concentrators ( sms ) and inhomogeneous media concentrators ( poisson bracket ), the design methods and the performances e. g. the gain and the field of view ( fov ) are compared as well as the application suggestion

    文摘:在無線光通信領域，利用非成像光學設計的集中器能夠聚集光輻射能量，而且相對于成像性集中器具有更緊湊的結構和更高的增益.利用光線追跡法對半球形集中器的性質進行了分析與研究.對好幾種非成像集中器:半球形集中器，復合拋物線形集中器，介質內部全反射集中器，多表面集中器，多相介質集中器，從設計原理、增益和視場進行比較，並分析其應用場合
  4. Standard test method for field determination of water penetration of masonry wall surfaces

    磚石墻表面水滲透性的現場測定的標準試驗方法
  5. In chaper 1, we give a summary and an overall review for the descriptions and measurements of random surfaces, the light scattering theory and its applications in the characterization of random surfaces, and the near - field optics and the near - field speckles

    第一章對隨機表面的描述和標定方法、光散射輪廓特性及其重要性、近場光學和近場散射的意義和近場散斑的特性進行了綜述。
  6. Basing on nurcc scheme we can construct surfaces that can interpolate nurbs curves and have different local continuous order. our method enables subdivision surfaces to be used in the field of complex shape design of industry products

    利用非均勻的catmull一clark細分方法，我們可以構造能夠插值若干條nurbs曲線、且具有不同的局部連續階的細分曲面，使得細分曲面走向各種復雜工業產品造型設計的應用領域成為可能
  7. Using 3d 20 - node iso - parameter, 3d 12 - node infinite element and 3d 16 - node interface element, a coupled numerical approach for pile group - soil system under lateral loads is set up. a corresponding three - dimensional, nonlinear and elastic - plastic program ( epagpll ), include two materials and four nonlinear constitutive relations, is worked out by fortran 90 computer language. in the analysis the nonlinear e - model, k - g model and cambridge model with two yield surfaces are employed in the analysis of near - field soil, and the nonlinear analysis method is used in the piles - soil interface and distant - field soil

    本人用有限元進行樁體和近域土的分析，對遠域土體採用無限單元，在樁土之間採用接觸面單元，建立了平面8節點環狀單元6節點無限元6節點接觸面單元相耦合的數值計算模型；針對豎直受力樁的流變分析，本人用內嵌于autocad的vba語言編制了前處理程序，可以快速形成包括網格、節點編號、單元編號在內的數據文件，供計算程序使用；同時在前人關于流變問題研究的基礎上，引進土體非線性流變本構模型，利用有限元、無限元、接觸面單元相結合的方法，用c + +語言編制了相應的計算程序。
  8. ( 2 ) the general methods to calculate the temperature field of reinforced concrete structures are summarized. the temperature field of reinforced concrete columns section is calculated in ansys, and the effects of different parameters such as design fires, surfaces exposed to fire, burning time, dimensions of cross section and concrete cover on the temperature field are analyzed

    （ 2 ）總結了受火鋼筋混凝土結構溫度場計算的一般方法，並用ansys對鋼筋混凝土柱截面溫度場進行了分析，得到了火災模型、受火面、受火時間、截面尺寸及保護層厚度等因素對柱截面溫度場的影響規律。
  9. In the second part, we investigate the compact submanifolds m with the parallel isoperimetric section in the real space forms rm ( c ) and prove that if there exists a parallel isoperimetric section on m, and the sectional curvature of m is always greater than zero, then m is contained in a hyper - sphere ; and get that the gauss curvature of the compact surfaces m with constant mean curvature in constant curvature space r4 ( c ) is always greater than zero, then m is a totally geodesic surface or a sphere, where an isoperimetric on m means a unit normal vector field defined globally on m with m1 ( ) = constant

    （ 2 ）研究了實空間形式r ~ m （ c ）中具有平行等參截面的緊致子流形m ，證明了具有一平行等參截面的子流形m ，如果m的截面曲率恆正，則m包含在r ~ m （ c ）的一個超球面內；對于常曲率空間及r ~ 4 （ c ）中具有常平均曲率的緊致曲面m ，如果m的高斯曲率處處大於零，則m或為r ~ m （ c ）中的全測地曲面或為一球面。這里m上的等參截面是m上整體定義的單位法向量場，使得m關於它的平均曲率m _ 1 （ ）是常數。
  10. Fairing curves and surfaces is a current research hot - point in cad / cam field. many scientific researchers of out - and - indoor have made huge efforts to deal with fairing curves and surfaces over the past few decades

    因此曲線曲面的光順處理成為cad cam中非常重要的一個問題，國內外許多學者對曲線曲面的光順問題進行了大量研究。
  11. Just in order to change the puzzle and passive situation mentioned above, we are devoted to the applied research of the generation of subdivision surfaces that can interpolate multiple given curves and possess sharp features, and its application in the field of surface modeling and surface design. this paper summarizes our theoretical research results and algorithms that have high actual practicable values

    正是為了改變這種困惑與被動的局面，本文作者致力於能插值一系列給定曲線並產生尖銳特徵的細分曲面生成原理及其在曲面造型設計中的應用性研究，取得了富有實際應用價值的理論成果及演算法，本文就是這一研究的總結。
  12. Chaper 4, we put forward the concept of the near - field speckles and study their properties by the numerical solution of the integral equation based on the green ' s theorem. we study the near - field speckles produced the by random self - affine fractal surfaces of dielectric medium. the speckle intensities evolve considerably in the near - field region and the local fluctuations in them disappear in the distance of a wavelength

    在第四章中，我們提出了近場散斑的概念，並依據介質界面電磁波的格林積分摘要方程對自仿射分形隨機表面產生的散斑光場進行了數值計算模擬研究，發現近場散斑分形特徵與自仿射分形隨機表面的特性有關，且這種分形特徵在非近場區域消失。
  13. Based on g - w contact model, two rough surfaces in contact were simplified to a smooth one and a rough one which has regular rectangular asperities, and a three - dimensional transient thermal and stress coupled fem model was established using thermal - structure sequential coupling. the course of the sliding with friction was simulated using the nonlinear multiphysics field fem, meanwhile considering thermal - elastic problems of the two bodies, to calculate and analyze the temperature, contact pressure and stress of the sliding contact surfaces with frictional heating

    基於g - w接觸模型，將兩個粗糙表面簡化為一個有規則排列的長方體微凸體的粗糙表面與一光滑表面，利用熱結構順序耦合建立三維瞬態有限元計算模型，考慮兩個物體摩擦接觸的熱彈性問題，採用非線性有限元多物理場來實現，對粗糙表面接觸模型的瞬時摩擦溫度場、壓力場和應力場進行了計算分析。
  14. In this paper a finite element model with several couples of contact surfaces is established to calculate the stress of outside turnout locking device on railway. the effects caused by the deformation of different rails on the stress field in the locking hooks are analyzed by marc software

    本文對一種鐵路道岔外鎖閉裝置建立了三維有限元接觸計算模型，採用商業軟體marc來進行計算，分析了心軌的變形對道岔鎖閉鉤的受力影響。
  15. 2 2 chemical disinfectants and antiseptics - quantitative surface test for the evaluation of bactericidal activity of chemical disinfectants and antiseptics used in veterinary field on non - porous surfaces without mechanical action - test method and requirements phase 2, step 2

    化學消毒劑和防腐劑.獸醫領域無機械運動無孔表面用化學消毒劑和防腐劑的殺菌活性評價用定量表面試驗.試驗方法和要求
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