面三角 的英文怎麼說
中文拼音 [miànsānjiǎo]
面三角
英文
facial triangle-
The first chapter, to clarify the conception of the " crossing situation ", focuses on expounding the definition and the classification of the " crossing situation ", including the definition of the " power - driven vessel ", " course crossing ", and " so as to involve risk of collision ", the classification of the pattern for the crossing situation as well, meanwhile, the thesis puts forward the general division for the " crossing situation " : such as small angle " crossing situation ", abeam " crossing situation ", and large angle " crossing situation "
第一篇主要論述「交叉相遇局面」的定義和分類，包括對「機動船」 、 「航向交叉」 、 「致有構成碰撞危險」這三者的定義和交叉相遇局面的分類，使「交叉相遇局面」在概念上有一個清晰的定義，同時明確地給出了交叉相遇局面三種交叉態勢的一般劃分：小角度交叉、正橫交叉、大角度交叉。Until about 1450 spherical trigonometry consisted of loose rules based on greek, hindu and arabic versions.
差不多直到1450年球面三角的內容由一些不嚴謹的法則組成，這此法則的基礎是希臘、印度和阿拉伯譯本。In order to increase pointing precision, the error caused by inductosyn and ad2s80a are analyzed as a focus, consequently, high precision inductosyn is used, then current iscompensated and finally the input and output differences are adjusted when
根據衛星軌道姿態，運用球面三角形找出衛星及星下點與目標點之間的關系，建立了指向反射鏡與目標點的角度關系。Morphing is the continuous smooth and natural transformation of a source object into a target object, where the object can be a numerical image, curve, surface, mesh, etc. morphing has very wide use in many areas, such as computer graphics, animation design, industrial modeling, science computation visualization, film stunt, etc. this paper makes researches on the morph of compatible planar triangulations and that of planar polygons, and the main results are as follows : 1 ) morph of compatible planar triangulations : this paper presents a convexity - preserving method for morphing compatible planar triangulations with different convex boundaries
變形，是指從初始物體到目標物體的連續、光滑、自然的過渡（這里的物體可以是數字圖像、曲線、曲面、網格等） 。變形在許多領域有著十分廣泛的應用，如計算機圖形學、動畫設計、工業造型、科學計算可視化、電影特技等。本文對同構平面三角網格的變形和平面多邊形的變形進行了研究，主要的研究結果如下： 1 ）同構平面三角網格的變形：提出了具有不同凸邊界的同構平面三角網格的保凸變形方法。Abstract : the attitude error performance of electrostatic gyro should be understood and the relevant error equations must be set up in order to ensure the navigation precision of esgm. the relation between the navigation errors and the attitude errors of gyro was derived by use of spherical triangle. the simulation results show that the temporal performances of the longitudinal and distance errors which come from the initial alignment errors are periodically variational. they also show that the longitudinal and distance errors resulted from gyro drifts are not convergent in time. thus, the effects of initial alignment errors and gyro drifts can not be neglected and must be estimated and compensated
文摘:為了保證靜電監控器的導航定位精度，需要了解靜電陀螺的姿態誤差特性，建立相應的誤差方程.本文採用球面三角形原理推導了導航定位誤差與陀螺姿態誤差的關系式.模擬結果表明，由初始定向誤差引起的經度誤差和距離誤差的時間特性是周期變化的；由陀螺漂移引起的經度誤差和距離誤差是隨時間發散的.因此，初始定向誤差和陀螺漂移的影響不能忽略，必須對其進行估計和補償For every large time intervals and for stars near to the pole, it is necessary, however, to use the exact formulae of spherical trignometry.
對于很長的時間間隔和靠近極星的恆星，必須使用精確的球面三角公式。Generally, a planar triangulation method is used to enclose the unmatched contours
通常，對末端輪廓都是以平面三角剖分封閉端面。Secondly, the triangle meshing of contour loops that includes triangle plane filling between layers and section triangle plotting was accomplished
其次，邊界輪廓環的三角網格化:層間三角面片填充和端面三角劃分。In triangle plane filling between layers, the loop matching operator between layers was adopted, which is that the loops were matched according to their characters, geometry centers and perimeters. four kinds of regular algorithm in filling between layers were analyzed, and the shortest diagonal algorithm, which was rather fit to this dissertation, was adopted in this dissertation. the contour loops of section were grouped and each loop was split to make each loop become a single outer loop that was triangle split with delaunay algorithm
在層間三角面片填充方面，採用層間輪廓環按環的性質、幾何中心和周長進行匹配的層間匹配演算法;分析了層間三角面片填充的四種常用的演算法，並根據本文需要選用並實現了最小對角線法;端面三角劃分時，將端面的輪廓環進行分組，再對每組環進行切分處理，使得每組環變成一個單一的外環，對單一的外環按delaunay演算法進行三角劃分;將所生成的三角面片按規定的格式寫入stl文件，生成可直接為快速原型製造所接受的stl文件格式。Abstract : basing on the introduction of brim - vector and face - vector, by means of analogy, the paper popularizes the cosine - theorem from flat - triangle to vacuum - polygon and arbitrary - polyhedron, concludes a series of generalized cosine - theorems which have symmetric and conformable form, and presents short and strict proof
文摘:在引入邊矢量及面矢量概念的基礎上，以類比作為手段，對餘弦定理進行由平面三角形到空間多邊形乃至任意多面體的一系列推廣，得出了形式對稱一致的一組廣義餘弦定理，並給出了其簡捷嚴謹的證明。2 ) for making the meshes consistent on the common boundaries of adjoining surfaces, a new approach of boundary discretization is employed. 3 ) the boundary - representation structure is adopted to fulfill the mesh generation over combined surfaces. 4 ) the quality of surface meshes is improved by point creation on 3d scan lines and diagonal swapping procedure
通過引入可移動的虛邊界解決了閉合曲面的剖分問題；通過對鄰接曲面公共邊界的統一處理，保證了組合曲面拼合處網格的相容性；以邊界表示數據結構為基礎實現了三維組合曲面的全自動網格剖分；採用空間掃描線布點、診斷交換等技術，優化了網格的質量；並以autocad為支撐平臺objectarx為開發工具，開發了一個基於幾何造型的曲面三角形網格全自動生成程序。The application of spherical surface triangle on the quantization of sun circle daily turn around
運用球面三角知識量化太陽周日視運動規律This paper discusses in detail the range of lon gitude of ascending node of the orbits, by which point and area targets can be c o vered in different conditions by considering the disturbance of the earth shape j2 using a sphere triangle method, and provides a whole analytic expressio n
利用球面三角方法詳細討論了在考慮地球形狀j2項的攝動影響時，各種情況下能覆蓋目標點的軌道的升交點經度范圍，並將其推廣到對區域目標的覆蓋，給出了完整的解析表達式。Four parameters for determining the type of circuit of spherical four - bar linkage are defined. according to the relationship of these parameters, three types of circuit of spherical four - bar linkage are found, which is proved in view of geometry point. base on the theory of sphere triangle, an approach of identifying the circuit and branch defect of spherical four - bar linkage is proposed
首先提出了四個迴路類型判斷參數，根西安理工大學博士學位論文據這些參數之間的關系，將球面4r機構迴路分為三種類型，並從幾何的觀點進行了證明;然後基於球面三角理論，提出了球面4r機構迴路及分支缺陷識別的轉角符號法，而由空間第一組機構與其等效球面4r機構迴路特性的等效性，此方法對空間第一組機構的迴路和分支缺陷的識別同樣有效。This paper researches and develops the digital simulation software of 3d terrain in accelerating the producing speed of plane triangle - net, the smoothing of waterway depth contour, the construct of waterway curve plane function, the drawing of 3d graphics and the waterway simulation
本課題主要研究開發三維地形數字模擬軟體，在提高航道平面三角網的生成速度、航道等深線的圓滑處理、航道曲面模型的建立、航道立體圖的繪制及航道模擬等方面進行了一些研究和開發工作。The algorithm is applicable to nonself - intersectant smooth surface set of any topology, including nonorientable surfaces, and its result is optimal surface triangulation in a way
該演算法適用於包括單側曲面在內的光滑且不自交的任意拓撲曲面集，且重建結果是相對優化的曲面三角形剖分。In the aspect of waterway plane triangle - net, waterway division is used to accelerate the producing speed of plane triangle - net, and a new method of division is presented. some discrete points are added in division lines, so the plane triangle - nets have same borderlines and the difficulty of waterway division is solved. the triangle - net is suitable for the request and the producing speed of plane triangle - net increases markedly
在航道平面三角網生成方面，提出以航道分區來加快平面三角網的生成速度，並給出了一種新的航道分區辦法，即在分區線上插補一定數量的離散點，使得各分區三角網在分區線上具有相同的直線邊界，有效地解決了航道分區的難點，生成的平面三角網符合要求，而且其生成速度得到了很大的提高。The definitions of flat surface triangulation, local separate sample and overall separate sample are given based on this discussion
在此基礎上，給出了平展的曲面三角剖分、局部分離樣本以及全局分離樣本的定義。Based on the posture of the assembly part and the translation of coordinates, a solution of building intersection line between the plane and the assembly part is discussed
在分析坐標系轉換和零部件位姿基礎上，研究了零件截切環求取、截切環拓撲樹建立、截切平面三角化等方法。Specifies how back - facing triangles are culled, if at all
指定必要時如何選出背面三角形。分享友人