approximation points 中文意思是什麼

approximation points 解釋
近似點
  1. This type of approximation is made at a finite number of points.

    這種近似法是在有限數目的節點處來進行的。
  2. ( 2 ) offset approximation for bezier curves the problem of parametric speed approximation of a curve is raised. the author points out that the crux of offset curve approximation lies in the approximation of parametric speed

    （ 2 ）等距曲線逼近（ offset ）提出了曲線參數速度逼近問題，指出等距曲線逼近問題的關鍵在於參數速度的逼近
  3. Based on the " size " of the set of perturbed minimal points in the variational principle, the differentiability of lower semicontinuous functions is examined by means of approximation of the infconvolution sequence

    摘要通過函數的下卷積函數列的逼近方法，在變分原理中從擾動最小值點集的「大小」入手，研究了下半連續函數的可微性。
  4. This process is as follows : firstly, the data of different section contour and of section line have been obtained by reverse - engineering ; secondly, non - uniform b - spline approximation algorithm is used to fit the discrete data ; then the data have been optimized and reduced by adopting adaptive sampling of key points of the fitted curve based on vertical distance, sequently the adaptive sampling data is transformed into the format of the. ibl file of the famous 3 - d design software pro / e. therefore we reconstruct the surface and a model is generated ; lastly, the effectiveness of the adopted algorithm and modeling approach are demonstrated by the experiments

    建模型的過程中，首先運用逆向工程測量方法，獲得曲面物體上不同截面輪廓線的測量數據點列，接著對測量數據點進行平滑處理，用最小二乘法求解基於數據點列的控制多邊形，以非均勻三次b樣條曲線擬合截面輪廓曲線；然後利用基於垂距的數據采樣演算法，對擬合曲線上的數據點進行重新采樣，達到優化數據點的分佈及減少描述曲線數據量的目的。
  5. The integral method via a scaling and squaring algorithm with the pade approximation is presented. the three - stage lobatto iii a formula is applied to structural dynamic time history analysis. and the three - stage lobatto a formula to use hermite third order interpolations to solve interpolating middle input between two boundary points is present, which provides more accurate solutions

    提出了基於自適應變尺度pad函數逼近的精細積分方法；建立基於lobatto a一階代數微分方程邊界問題數值求解技術求解結構動力學問題的時程分析方法，提出了中間插值點hermite三次插值lobatto a數值逐步積分時程分析方法。
  6. The concept of light coming from a point is an approximation. no real world light source is dimensionless. all light is shed by surfaces, not by points

    來源於一點的照明概念其實是一種近似。真實世界里光源都是有維度的。所有光線都是從表面投射，而不是從點。
  7. In the main - process, the coordinates of nodal points on part outline curve can be calculated by replacing this curve with a linear approximation. the codes expressed in nc program form which can be recognized by nc machine tool are got according to the coordinates of these nodal points in the post - process

    在前置處理中，用直線逼近零件輪廓，得到輪廓曲線的節點坐標：在後置處理中，根據這些節點坐標按照數控程序的格式得到數控機床可以辨認的程序代碼。
  8. Approximation of fixed points of generalized asymptotic quasi - nonexpansive type mapping

    空間上廣義漸近擬非擴張型映象不動點的逼近
  9. Iterative approximation problem of fixed points with mixed errors for asymptotically quasi - nonexpansive type mappings in banach spaces

    關于漸近擬非擴展型映象不動點的迭代逼近問題
  10. Approximation fixed points of strictly pseudocontractive mappings by ishikawa iterative procedure

    迭代程序逼近嚴格偽壓縮映射的不動點
  11. Sui yunkang and yang zhiguang, modified newton method and dual method through a rational approximation at two expanded points, engineering optimization, vol. 24 ( 1995 ) : 1 - 17

    隋允康，結構優化的曲線尋優理論及其逼近論和常微分方程組解法，中國學術期刊文摘， 1卷2期（ 1995 ）
  12. The paper applies algebraic geometry, computational geometry, approximation theory to study the following problems : the nother type theory and the riemann - roch type theory of the piecewise algebraic curve ; the number of real intersection points of piecewise algebraic curves ; the real piecewise algebraic variety and the b - net resultant of polynomials

    本文應用代數幾何，計算幾何，函數逼近論等學科的基本理論，分別就分片代數曲線的n （ ? ） ther型與riemann - roch型定理；分片代數曲線的實交點數；實分片代數簇以及多項式的b -網結式進行研究。
  13. Using local base surface parameterization, a parametric quadric surface approximation method is used to estimate the local surface curvature properties of scattered points based on propagating normal vector direction

    首先，計算各點的鄰近點集，選取合適的局部基礎曲面，把鄰近點集投影到相應的局部基礎曲面。
  14. A smoothing technique is combined with optimum approximation and finite element piece - wise interpolation in the method, it can simultaneously process measured vector components, imp ro ve smoothing capability of solution, space composed of original discrete points and increase the accuracy of the solution, especialy its derivatives

    該方法結合最佳逼近、有限元分片插值與光順技巧，對測量向量各獨立分量進行處理，改善了原離散點構成的解空間的光滑性，提高了解尤其是導數場的精度，在測量區域內再現了光順向量函數及連續的導數。
  15. Global b - spline approximation of given data points

    樣條曲線逼近
  16. But all designed software before in our country still have some weakness, for example, the conventional type of cam counld be projected by these software is very little, and used approximation by lines to curves of cam which have bigger error and more nodal points that result in chattering of principal axis. in furthermore, this software of designing cam in fact only has the function of cad. if you want to simulate and work over the designed cam in that software, you will find that you have to export it to other cad / cam system software ( e

    隨著數控加工在我國的深入開展，真正實現我國的凸輪cad cam就顯得非常必要，但以往的凸輪設計軟體還存在許多不足，如可設計的凸輪類型較少，大多集中於平面凸輪；且採用誤差較大、節點數過密的直線逼近法生成凸輪工作曲線，造成計算時間長，且加工中產生較大振動；同時這些凸輪設計軟體基本上只具有cad功能，如果想將設計好的凸輪進行模擬和加工，就必須將圖形輸出到其它通用cad cam軟體（如mastercam等）中，因此這些軟體在實際應用中總不盡人意。
  17. This paper researches the numeric approximation characteristic of series - parallel fuzzy system and points out that the number of fuzzy rules should not exceed the number of the samples. in addition, the influence of approximation error and system initial error on the performance of the series - parallel fuzzy system is also investigated

    本文研究了串並聯方式模糊系統的數字逼近特性，得出結論：當模糊規則數等於樣本數時，已經可以實現精確插值，因此模糊規則條數不能超過樣本數目，否則將冗餘，並可能引起振蕩，削弱模糊系統的泛化能力。
  18. The approximation of the fixed points of lipschitz strongly pseudocontractive mappings in lp spaces

    強偽壓縮映射的不動點的迭代逼近
  19. The general idea behind the second one is approximation. the control mesh is subdivided until the error between the control vertices and corresponding subdivision surface is less than a given threshold. then the vertices substitute those points on the surface approximately. the last step is to calculate offset point for every vertex and connect them to form an offset surface

    第二種演算法採用逼近思想，首先通過對控制網格進行細分，當控制頂點和細分曲面的距離滿足一定誤差要求時，近似用控制頂點代替細分曲面上的點，然後對各個頂點分別求等距點。
  20. The feature points of the image are detected from the lowest approximation of the wavelet transform. the watermark is inserted in the wavelet coefficients corresponding to the feature points

    從圖像小波變換的最低頻逼近中檢測出圖像的特徵點位置，在特徵點對應的小波系數中嵌入水印。
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