直線段 的英文怎麼說
中文拼音 [zhíxiànduàn]
直線段
英文
linear portion-
They not only inherit the advantages of bezier curves and b - spline curves, also can be used to represent straight lines precisely and some remarkable transcendental curves precisely, such as circular arc, ellipse, cardioids and twisted pair line etc. especially, the uniform t - b - spline curve of three degrees is smoother than b - spline curve and c - b - spline curve of the same order
此外由於它們還具有三角函數的優點，故既可以精確表示直線段、二次多項式曲線段又可以精確表示圓弧、橢圓弧等二次曲線以及心臟線、雙紐線等超越曲線。特別地， 3次均勻t - b樣條曲線曲面比同階均勻b樣條（ c - b樣條）曲線曲面具有更高的光滑度。( 4 ) the instability problem of the columniation supporting was solved in the construction of side - span. ( 5 ) the circle - steel nip - patch anchor was applied for the thread - snap of the prestressed crude steel wire, the double facility anchor was used for deeling with the slip - wire of steel wring
（ 4 ）在邊跨直線段施工中，採用一端設立柱另一端吊掛在已合攏梁段上的梁式膺架，解決了支柱支承在古錯落體上的不穩定問題。Finally, a method is put forward to construct the nurbs curves on sphere, which extends the de boor recursive algorithm in r3 to one on the sphere by replacing the geodesic distances for the lines and studies their many geometric properties analogous to those in euclidean spaces, such as the differential property, the local property, the parameter invariance under a projective transformation, and so on
兩種方法均給出誤差估計，使逼近螺線可達到任何預先給定的精確階。最後，給出球面nurbs曲線生成演算法：用球面上測地線? ?劣大圓弧代替直線段，將歐氏空間r ~ 3中的deboor遞推演算法推廣到球面上構造麯線。This dissertation is about taking use of the merit of the traveling wave principle, exciting a traveling wave in a ring type stator with two tangential paths, generating the linear movement of the ultrasonic motor
本文研究利用行波原理的優點，在具有兩個直線段的長環形結構中激勵出行波，使馬達產生直線運動的超聲波直線馬達。Soil springs are used around the pipe including vertical, lateral and axial soil springs to consider the interaction between the pipeline and the surrounding soil. the pipe segment near fault that usually suffers large deformation is modeled with a plastic shell element in order to consider the effect of local buckling and section deformation. to reduce the calculating time of the whole model, an equivalent spring proposed by the author is applied at two ends of the shell model
為了解決現有的殼單元方法需要大量計算機時的缺點，本論文首次從理論上把離斷層較遠管土之間相對變形較小的管子直線段部分的變形等效為一個非線性彈簧，將此等效邊界引入到有限元模型中，使得模型中的殼單元部分主要用來分析我們所感興趣的在斷層附近發生大變形的管段，從而達到節約計算時間的目的。In shape analysis, we get feature units of shape, that is, arc segments and straight - line segments through segmentation and identification of digital curves and the following combination of the same features, and present a new method of object expression and recognition based on straight - line segments
在形狀分析中，通過曲線分割、分段識別以及相同特徵的合併來提取形狀特徵基元，即弧線段和直線段，提出一種基於直線段的目標描述和識別方法。Feedrate planning of continuous micro - line ' s start and end points are discussed, and the constraining conditions, including the machine ' s acceleration and deceleration capability, allowable error of corner machining, maximum acceleration and dynamical behavior of the machine, are established 。
摘要針對連續小直線段高速高精插補演算法中起始點和終止點的速度規劃，建立了包含機床加減速性能、轉接處誤差控制、最大加速度以及機床負載功率等的速度約束條件。We extend this method to the problem of a domain which boundary is an open arc or an open segment. in this paper, we simulate the singularity of solution in extreme point of open arc or open segment by singular element
本文還把此方法推廣到求解區域邊界是直線段或者開弧段的情況，採用引入奇異邊界單元的方法來模擬解在開邊界端點附近的奇異性。With fortran power station 4. 0, we make galerkin boundary element method program for solving laplace equation on region which boundary is a closed curve or an open arc, and the numerical experiments also prove this method is reliable. last we test the error of galerkin boundary element by numerical experimentation
最後利用fortranpowerstation4 . 0程序語言分別編寫了用galerkin方法求解區域邊界為閉曲線及區域邊界為直線段或開弧段laplace方程的計算機程序，通過幾個算例證明了該方法是有效的、是可行。By using multiple knot insertion techniques, cusps and straight - line segments allow to arise in the nuat b - spline interpolating curve, and its slackness and smoothness can be controlled by the change of the parameter
2 .通過重節點插入技術構造了帶有尖點或直線段的混合插值曲線，分析了混合因子對插值曲線鬆弛性的調節作用Accordring to basic concept and assumes essentially on the basic of sweden method of slices, be living below the maximum equilibrium state, the function expression about stability safety homogeneous slop is deduced, and the slope surface is consist of two lines and an arc, afterwards according to analysis theory of minimal value ruling on the basic of the maximum, genetic algorithm is applied to slove the dangerousest slide situation and radius and corresponding safely factor
根據瑞典圓弧法的基本概念和基本假定，在極限平衡狀態下，推導了兩直線段均質斜坡穩定性安全系數函數表達式，然後根據極限分析理論的極小值原理，利用遺傳演算法，求出了邊坡穩定性安全系數極小值，並得到最危險滑動面的滑弧半徑和滑弧中心坐標。The methodology adopted by most existing cam / cnc systems, which uses huge amount of linear segments to approach the original shape and make linear interposition increases the cost of memory size and communication work of the cnc system tremendously. a new approach based on cubic polynomial and b spline interposition to rebuild the cam generated tool path under real time condition is presented in the paper. applications on cnc machine tools showed that the presented approach improves the machining accuracy and increases the cutting speed significantly
目前大多數cam / cnc系統採用大量小直線段逼近原始曲線和直線插補的做法，只能獲得零階連續的走刀軌跡，逼近精度低，不能保證高速加工運動的平穩性，因而加工精度、光潔度和加工速度都難以提高；由小直線段構成的nc代碼數據量龐大，也增加了數控系統在內存容量和數據傳輸方面的成本。4. the author particularly discussed the drafting method of involute, using spline which is defined by many points to construct involute. compared with other involute defined by arc or straight line segment, the precision of this kind of involute is improved evidently
4 .對齒輪漸開線的造型方法進行了詳細的分析研究，用多點定義的spline線來構造漸開線，與用圓弧或直線段擬合方法相比，漸開線的精度得到顯著提高。A survey on recent progress in database research. journal of computer science and technology, 2003, 18 : 538 - 552. 23 papadopoulos a, manolopoulos y. parallel processing of nearest neighbor queries in declustered spatial data
Ii引入了一個新穎的度量metric來減少查找空間，即將點到最小邊界矩形mbr之間的距離擴展成直線段或軌跡段到mbr之間的距離。Analytical results proves the existence of the two needed bend standing wave which generate traveling wave in the ring - type structure with two linear portions, and also confirms the existence of traveling wave through the harmony response analysis
採用有限元方法對帶有兩個直線段的超聲波直線馬達進行了分析，分析結果表明長環型結構上存在著產生行波所需的兩個彎曲駐波。Renders the vertices as a list of isolated straight line segments
將頂點呈現為一系列獨立的直線段。Calculation of internal forces of circle - arc beam with linear part under the action of vertical loads
任意垂直荷載作用下帶直線段水平圓弧梁的內力計算Property to track left mouse clicks and draw a series of straight line segments in response to user input
屬性跟蹤鼠標左鍵單擊，並繪制一系列直線段作為對用戶輸入的響應。Each additional point specifies the endpoint of a line segment whose starting point is the endpoint of the previous line
其他的每個點指定以前一直線段終結點為起始點的直線段的終結點。In all simulations, it was assumed the loop topology ( i. e., single straight segment ) and gauge ( i. e., 26awg ) is known
在各種模擬中，假定環路拓撲（如單根直線段）和規格（如26awg ）是已知的。分享友人