line geometry 中文意思是什麼
line geometry
解釋
線素幾何學-
In the paper, we discuss the equation about angle bisector of intersecting line in the analytic geometry and the equation about the bisection planes of dihedral angles in analytic geometry of three dimensions
摘要主要討論了平面解析幾何中和空間解析幾何兩相交直線夾角平分線方程及空間直角坐標系下兩相交平面的二面角的角平分面方程。 -
Based on projective geometry, the research works about 3d invariance ' s extraction and application have been done in this thesis as following : ( 1 ) the basic theories and concepts in projective geometry are systematically summarized. it includes : the camera models of perspective imaging, projective collineation, cross ratio, a simple compare about invariance ( invariant ) among some geometry transformations, fundamental matrix, epipolar and epipolar line in epipolar geometry, and so on. ( 2 ) the calculation methods for 2d projective transformation are extended from points to multi - element, which includes points, lines, points lines and so on, to get the relationship between two projective planes
基於射影幾何理論，論文圍繞3d不變特徵的提取和應用進行了如下的研究工作： （ 1 ）系統總結了射影幾何中的若干基礎概念，包括：透視成像的相機模型、射影對應、交比不變量、基於不同幾何變換下的不變量的簡單對比、對極幾何中的基礎矩陣、對極點、對極線等。 -
Therefore, the method of screen spreading is presented herein with the following basic feature : taking the surface of the perpendicular line at the end of the distortion and bottom as the datum plane, move the controlling point of every distortion part to the datum plane with the principle of changeless of geometry size, and then the spreading is formed
為此提出一種屏幕展開方法，此方法的基本要點是，以扭曲面末端垂直線和底部起坡線所在的平面為基準面，將扭曲面各分塊的控制點按幾何尺寸不變的原則搬到基準面，即可形成展開圖。 -
Based on the geometry characteristics of bertrand surfaces, the complicated surface conjugation issue can be discussed with their directrix line. according to the different generatrix line which can be divided into common plane curve, circular - arc curve and straight line, bertrand conjugation surfaces are parted into three typical types, and the basic equation and differential formula are established, then the conjugation conditions are found. aiming at the inclusive problem, the structure condition is given
論文將白川德共軛按母線為一般平面曲線、圓弧、直線分為三種典型類型，分別建立了共軛的基本方程與微分關系式，據此給出了各種類型的共軛基本條件，發現這是一類更強更嚴的條件，存在有相容問題，進而研究了白川德共軛的結構條件，至此確立了白川德共軛的基本框架。 -
The third line of development is that of higher geometry.
第三條發展路線是高等幾何學。 -
Entity knowledge base provides computing models information, such as, life or not, fly or not and so on. besides, there are some geometry properties such as normal line, orientation and so on
實體知識庫提供實體的基本屬性信息，比如是否具有生命，是否會飛的屬性，另外還有一些幾何屬性，法線方向、朝向等。 -
There are some geometry characters about it, for example, it is simple in structure, and the normal lines along generatrix line are in one plane, so there are the extensive applying prospects hi mechanical transmission and surface processing
此類曲面結構單純，沿母線法線共面，並且有許多重要的幾何性質，在機械傳動和曲面加工中有著廣泛的應用前景。 -
The paper has improved the existing lifting - line and lifting - surface design method by including the rake and skew and solving the optimum circulation distribution with the optimum theory. the blade geometry is expressed with b - spline for the lift - surface method. the boundary condition on the blade is transformed to minimize the summation of the square of normal velocities, the fair blade geometry can be obtained by present technique and the design quality is better
改進了現有的升力線和升力面設計方法，在升力線設計中計及槳葉的縱傾和側斜的影響，用優化理論求解最佳環量分佈，升力面設計中用b樣條來擬合槳葉，將物面邊界條件轉化為求法向速度分量的平方最小，由此可得到光順的槳葉幾何形狀，提高和改進了設計質量。 -
According to the differential geometry theory, the principle curvatures and principle relative curvature of the spur gear and the fg in line contact and point contact, the tooth surface relative speed and the tooth contact interface are analyzed, whose distributing on the tooth surface are visualized by computer
在齒面的幾何特性研究中，利用微分幾何的原理分析了圓柱齒輪和面齒輪的齒面曲率、線接觸和點接觸面齒輪傳動的主誘導法曲率以及嚙合過程中齒面的相對速度和接觸區域計算問題，並獲得有益的結論。 -
The algorithm can be applied to connection routing in pcbs with various pad geometry and pad sizes, with different wire widths and variable distances between wires. the basic element in routing is the search line with a given destination. the main features of the router are the target orientation of the search lines, the routing efficiency is guaranteed by rationally designed data structures and by the ability of searching around obstacles, the small amount of working storage and the reasonably short routing time
該布線演算法適用於焊盤外形尺寸不一，線寬及線間距離可變的印刷電路板布線，其基本要素是帶有預定終點的探索線，特點是線探索具有目標針對性，設計合理的數據結構及靈活的繞障探索方式可大大提高搜索效率，所需存儲量小，布線速度快。 -
Through the calculating example results and the comparisons with other calculating theories, it is proved that the calculating formulas of the combined geometry curve theory is valid, practical and accurate. it can be used in the calculation of line shape at the preliminary design, and can meet the engineering need. ( 3 ) this thesis researches systemically on the calculating theory of the suspension bridge ’ s cable system, including calculating design line shape and internal force, erection line shape of cable and pre - displacement of saddle without loads, the fixed position for erecting cable and amendatory method of cable ’ s unstressed length
通過算例驗證了混合線形理論公式的實用性和正確性，並且與其它計算理論的結果比較，證明公式有足夠的精度，可用做初步設計中主纜線形的計算，能夠滿足工程的需要; （ 3 ）對自錨式懸索橋主纜系統計算理論進行了系統研究，包括成橋線形和內力計算、空纜線形和內力計算、鞍座預偏量計算、索夾安裝位置計算和索鞍處主纜無應力長度修正方法。 -
( 2 ) by using the methods of analytic geometry and mbs and parameter measure map along x - axes by 9 - line distinguish method, the formulas for correctly identifying the error parameters have been established
（ 2 ）針對sk - 21數控磨床開展誤差參數檢測實驗，通過現場測量，獲得凸輪工作臺直線運動誤差和旋轉誤差數據，運用9線辨識法進行分析，經數學處理后為補償程序提供必要數據。 -
Basing on the theory of shape geometry, the distribution of rock blasting fragmentation are discussed, fragmentation of blasting experimentation of different charging construction appears shape character, and the relation of explosive ratio, line of weakness and distribution of blasting fragmentation are confirmed by regression, the relation of function of explosive ratio of distant loading and consecutive loading are confirmed by contrasting different distribution of blasting fragmentation of charging construction, a new approach will be put forward for optimized of bore net parameter and forecast of distribution of blasting fragmentation
回歸分析了爆破試驗的炸藥單耗、底盤抵抗線與爆破塊度分維數之間的函數關系，對比不同裝藥結構爆破塊度的分維數，得出了同等條件下間隔裝藥與連續裝藥炸藥單耗差值的關系，以及裝藥結構對巖石爆破塊度分佈影響的規律。根據對巖石爆破破碎塊度分佈分形規律的研究，找出了預測孔網參數優化、爆破塊度分佈新的途徑。 -
In the rotor design, it makes a detailed calculation for all the geometry feature parameters including geometry dimensions, contact line length, blowhole area and flow cross - section area and the thermodynamic feature parameters such as cooling capacity, shaft power and so on
在轉子設計方面，對全部幾何特性參數，包括幾何尺寸、接觸線長度、泄漏三角形面積和面積利用系數等以及包括製冷量、軸功率等冷水機組熱力特性參數進行了詳細計算。 -
On the basis of analyzing the reason of bad aluminum foil crosscut effect, this text applies the geometry characteristic of the uniparted hyperboloid to the crosscut mechanism of moving aluminum foil, and confirmed the type line of rotating knife edge, thus a kind of rational method for movement aluminum foil crosscut had been drawn
在分析鋁箔橫切效果不佳原因的基礎上，把單葉雙曲面的幾何特性應用於移動鋁箔的橫切機構之中，並確定了轉刀刀刃的型線，從而得出一種移動鋁箔橫切的合理方法。 -
By means of trigonometrical progression method and the mainline track spectrum, the sample function of the chinese mainline railway track random geometric irregularity is simulated. with the data obtained from track geometry inspection car on qinhuangdao - shenyang special line for passenger transport and arma time series model, the sample function of high - speed railway track random geometric irregularity are simulated. based on existing literature, the artificial bogie crawl waves at various different speeds are randomly simulated
根據我國干線鐵路軌道譜，採用三角級數法模擬出干線鐵路和準高速鐵路軌道不平順的樣本函數；根據秦沈客運專線高速試驗段軌檢車資料，採用arma時間序列模型模擬了高速鐵路軌道不平順隨機樣本函數；在既有研究資料的基礎上模擬出各種速度客車構架人工蛇行波；用隨機變量描述道床橫向剛度，並進行了隨機模擬；將振動理論和穩定理論結合建立系統的分析模型和運動方程；根據monte ? carlo法編制了車輛?軌道耦合系統隨機振動分析程序，進行了無縫線路隨機動力響應分析，通過試驗對計算模型、計算方法進行了驗證。 -
This thesis analyzes circle array ’ s performance and employs different arithmetic accordingly ; transforms circle arrays to line arrays by mode transform ; analyzes the space geometry antenna ’ s pattern function
本文分析了圓形陣列的性能，在此基礎上應用了不同的演算法;利用模式轉換將圓形陣列轉化成為虛擬的線陣，並且分析了共形天線的方向圖函數。 -
We consider all kinds of plane line representations of a plane line, and a simple and practical line coordinate system is suggested. we also present a new 3 - d line representation model. the new representation model is based on the geometry theory : the intersection of two arbitrary planes in the 3 - d space is a line in a plane
本文提出了直線坐標的概念，通過分析各種平面直線的表示方法，提出了一套簡單而實用的直線坐標表示方法，提出了一種新的空間三維直線表示法，這種表示空間三維直線方法是根據空間相交兩平面一般交於一條空間直線的思路而提出的。 -
The principle of the predigestion in geometry modeling is omitting the function part and the non - load - carrying process structure, and to the big and transition arc, the curve is replaced by straight line using the thought of curve and free - surface segmentation. the physical characteristic of the digital model reflect on remaining the main mechanical characteristic of the objects. the shell element model is used in strength analysis, stiffness analysis and dynamic analysis
文中幾何建模的簡化原則是，略去功能件和非承載的工藝結構，對于大圓弧和過渡圓弧，以曲面分塊和曲線分段的思想進行適當的以直代曲;數模的物理特性反映在最大限度地保留對象的主要力學特性;在強度、剛度和動態分析中採用殼元模型，輕量化設計中採用梁元模型;材料特性根據所用材料定義其主要性能參數。 -
We introduce a method that the line - plane relation in the geometry space can be determined by analyzing the structure of the solution space of the derived - system of the system of linear equation
摘要講述了如何通過分析線性方程組導出組的解空間結構去判定幾何空間中的線面關系。
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