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二次曲面     
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  quadric surface
     Study on the Theory and Technology of Quadric Surface Feature Extracting Based on Point Cloud
     基于点云的二次曲面特征提取理论和技术研究
短句来源
     Application of shepard fitting method based on quadric surface in GPS leveling
     基于二次曲面的Shepard拟合法在GPS水准中的应用
短句来源
     the curve structure and projective structure of the normal quadric surface
     常态二次曲面的曲线结构和射影结构
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     In this paper,we discuss the necessary and sufficient condition with respect to which there are circular cross-sections on quadric surface,if the characteristic roots t 1t 2t 3 and t 2≠0,then there are circular cross-sections.
     本文讨论二次曲面上存在圆截线的充要条件 ,若其特征根 t1≥ t2 ≥ t3 ,且 t2 ≠ 0 ,则存在圆截线
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     The Application of Theory of the Quadric Surface
     二次曲面理论的一个应用
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  quadratic surface
     Gauss Ball~+ Based Quadratic Surface Sub-Decomposition and Recognition
     基于Gauss Ball~+的二次曲面细分解与识别
短句来源
     Quadratic surface fitting and uncertainty analysis of fitting parameters
     二次曲面拟合与拟合参数不确定度分析
短句来源
     Mathematical Model and Error Analysis of Grinding Quadratic Surface With Cup Wheel
     杯形砂轮铣磨二次曲面的数学模型与误差分析
短句来源
     A Matrix Method for Seeking the Equations of Tangent planes of a Quadratic Surface
     求二次曲面的切平面方程的矩阵法
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     Virtual Experimental Design of the Quadratic Surface Base on Computer
     二次曲面绘制的计算机虚拟实验设计
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  conicoid
     This article briefly introduces how to compile a CAI courseware of conicoid and summarizes the technique and experience in developing a CAI courseware of higher mathematics figure by many kinds of software such as AutoCAD,3DS,VB etc.
     通过简要介绍笔者编制二次曲面CAI课件的过程,总结了综合利用AutoCAD、3DS、VB等多种软件开发高等数学图形CAI课件的技巧、经验和体会。
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     THE IMAGING FORMULAS OF ROTATIONAL CONICOID
     旋转二次曲面的成像公式
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     Accurate Formula and Application of Being Refracted and Forming Images on Rotational Conicoid
     旋转二次曲面折射成像的精确公式及应用
短句来源
     Calculation Method and Formulas of Conicoid Aspherical Degree
     二次曲面非球面度计算方法及公式
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     Comparing with the conicoid fitting method (CFM)to converse GPS height, the accuracy of the transform result with the CF&NNM method canimprove 20 percent.
     作者还对该方法的实质进行了解析,与二次曲面拟合法相比,利用CF&NNM法转换GPS高程,其转换结果精度大约可提高20%,具有推广价值。
短句来源
更多       
  quadric
     Study on the Theory and Technology of Quadric Surface Feature Extracting Based on Point Cloud
     基于点云的二次曲面特征提取理论和技术研究
短句来源
     All quadrilateral mesh automatic generation for regular quadric surfaces based on Auto CAD AME
     基于Auto CAD AME的规则二次曲面壳的全四边形网格自动剖分
短句来源
     Application of shepard fitting method based on quadric surface in GPS leveling
     基于二次曲面的Shepard拟合法在GPS水准中的应用
短句来源
     Inner point and exterior point of a quadric and its plane of the type of contact plane
     二次曲面的内、外点及切平面型平面
短句来源
     the curve structure and projective structure of the normal quadric surface
     常态二次曲面的曲线结构和射影结构
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  quadric surface
With the Lagrange multiplier method, the minimum distance between the center of a circle and a quadric surface is given as well.
      
Methods considered include finite differences, a facet based approach, and quadric surface fitting.
      
We show that in order to solve this problem without splitting the facets of the polyhedron, the prescribed tangent planes must satisfy a condition, and under this condition we give a local scheme for constructing the smooth piecewise quadric surface.
      
Einstein-Weyl spaces and (1 , n) -curves in the quadric surface
      
Use is made of a quadric surface which may be fitted to nine points.
      
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  quadratic surface
Restriction of the Fourier transform to a quadratic surface in [InlineMediaObject not available: see fulltext.]n
      
It is well known that any regular surface can be locally approximated in the neighborhood of a pointp by the explicit quadratic surface of the form r(x,y)=[x,y1/2(αx2+βy2)]T to the second order where -α and -β are the principal curvatures at pointp.
      
In this paper, we develop the equations of the self-intersection curves of an offset of an explicit quadratic surface.
      
Vortex boundary layer under quadratic surface stress
      
Removal of a quadratic surface from the observed geoid heights leaves a residual positive anomaly with the same shape as the rise and an amplitude of about 8 m.
      
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  conicoid
Optics of oblique meridional and nonmeridional rays of a conicoid
      
An exact analytical procedure is described for the optimum design of baffles for any Cassegrain telescope with conicoid type mirrors.
      
An exact analytical procedure is described for the optimum designof baffles for any Cassegrain telescope with conicoid typemirrors.
      
  quadric
Such an action is called linearizable if it is equivalent to the restriction of a linear orthogonal action in the ambient affine space of the quadric.
      
We prove that if a reductive group action on an affine quadric with a 1-dimensional quotient has a linear model, then the action is linearizable.
      
With the Lagrange multiplier method, the minimum distance between the center of a circle and a quadric surface is given as well.
      
Invariants of CR-manifolds associated with the tangent quadric
      
We construct a system of CR-invariants of a manifold generated by projective invariants of the tangent quadric.
      
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