plane triangle 中文意思是什麼
plane triangle
解釋
平面三角形-
The rotational inertia of an arbitrarily triangle uniform plane is calculated by a simple method. it is pointed out that principal axes can be deduced from the calculation
摘要用一種簡單的方法計算了均質的任意三角形平板剛體的轉動慣量，並由此結果給出一般三角形的慣量主軸。 -
In this paper, it is proved that, given 3 control points a, b and c, if the camera s optical center o lies on one of the three planes perpendicular to the plane abc and going through one of the three altitudes of the triangle abc, and additionally its projection on the plane abc is within the circumscribed circle of the triangle, that is, o is within the so - called danger cylinder, then the corresponding p3p problem - o, abc - must have 4 positive solutions
Pnp perspective - n - point問題是計算機視覺攝影測量學乃至數學中經典而重要的問題之一，所謂pnp問題，就是指如下的物體定位問題：假定攝像機為小孔模型且已標定好，攝取一幅在物體坐標系下坐標已知的n個空間點的圖像，且這n個圖像點的坐標已知，確定這n個空間點在攝像機坐標系下的坐標。 -
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。 -
To improve computing precision, the latter applies interpolating function of curved - quadrilateral element containing six npdes to thicking the influence surface of grillage. compared with lagrangian interpolation for rectangular element and triangle plane interpolation, this way not only improves computing precision but be more suitable for the curved - bar grillage analyzing method introduced this paper
為了提高計算精度，本文應用六結點曲邊四邊形單元插值函數加密梁格影響面，與矩形單元拉格朗日插值及三角平面插值方法相比，不但提高了計算精度，且更適于曲桿梁格分析。 -
On the assumption of ignoring the distortion of thickness, this paper determines the rough shape by the geometric modeling method of equal area developing using mixed mesh cell of triangle and quadrangle for the first time, presents the equal area developing arithmetic of quadrangle - triangle. on the virtual geometric symmetry axis, we puts forward the method of determining the developed coordinate of the point on the base band in the development of using regular quadrangle cell, determines the developed shape of internal structure in plane utilizing point - to - point mapping theory. furthermore, we realize the approximate developing of undeveloped - irregular boundary surface using a few triangle cells
本文結合型號研製中小曲率機翼整體壁板類零件坯料展開課題，基於板料厚向變形忽略不計的先驗假設，首創混合四邊形-三角形網格等面積展開的幾何模擬法確定壁板類零件毛坯外形，給出了混合四邊形-三角形網格等面積展開演算法；提出了虛擬分割線的概念，採用虛擬幾何對稱軸，給出了規整四邊形單元展開基帶上結點的計算方法；採用映射原理和求交演算法確定了壁板內部結構信息的展開定位。 -
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。 -
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。
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