通过应用瑞利里兹法研究了分层椭圆几何参数和缝线等效弹性系数对压缩屈曲载荷的影响。
The effects of geometry parameters of ellipse and stitching thread on buckling loads are investigated by Rayleigh Ritz energy method.
从椭圆坐标变换和边界拟合出发，推导了椭圆几何参数的计算方法，并给出了计算机模拟检测结果。
The computing methods of ellipse geometric parameters is derived by using coordinate transformation and edge fitting, and the computer simulation result is given.
椭圆的参数方程的几何意义是众所周知的(见例1)。
The geometric meaning for the parametric equation of ellipse is a familiar thing (See example 1).
该文描述了代数几何与ecc的数学基础及椭圆曲线离散对数问题困难性，讨论了ECC在电子商务中的安全应用。
This paper describes the mathematics base of algebraic geometry and ECC. It also discusses the elliptic curve discrete logarithm problem (ECDLP) and the security applications of ECC on E-commerce.
在双曲空间中，考察椭圆的包含关系，对弧长元素、测地曲率、曲率、面积及全曲率等几何量做出细致考察。
Some geometric data of ellipse in hyperbolic space are considered, such as set inclusion, arc length, geodesic curvature, curvature, area and total curvature.
根据飞行器椭圆弹道的性质、飞行器再入条件、球面几何和不动点原理给出了理想弹道的计算算法。
Baced on the properties of elliptical trajectory, the reentry conditions of the vehicles, spherical geometry, and the fixed-point theorem, an algorithm for the ideal trajectory is proposed.
莱茵环的几何线形是斡旋于四方形和圆形之间的扁平状超椭圆形。
The geometry of the RheinRing is based on the mathematical model of a super ellipse, a flattened ellipse that mediates between thesquare and the round forms.
本文介绍了具有椭圆环几何处理能力的组合几何包CGT。
This paper introduces the combinatorial geometry package CGT with the capability of the torus geometric treatment.
本文利用等腰正交的性质和相关理论研究R~2空间上的度量椭圆的结构和性质及与等腰正交有关的几何常数。
By the theories of isosceles orthogonality, the properties and structure of metric ellipses in R~2and the geometry constants associated with isosceles orthogonality are studied in this paper.
本文从几何线型选择及椭圆形高速环道主要参数控制几个方面论述了高速环形试验路的设计方法。
This paper discusses the design method for high speed loop test road in terms of selection of geometric alignment and parameters of elliptical high speed test road.
采用等效矩形波导法分析几何双折射光纤的双折射特性，并对双包层椭圆光纤及边隧光纤作实例分析。
Birefringent properties of geometrical birefringent optical fibers are analysed by using the method of equivalent waveguide with rectangular regions.
画图程序，让画出直线，椭圆，多边形等几何元素，结果可以保存并可读出。
Drawing program, so that draw lines, ellipses, polygons and other geometric elements, the results can be saved and can be read out.
根据椭圆与其法线的几何特征关系建立了求解法线的解析方程，分析了法线问题解析求解的繁杂性。
According to the relationship between ellipse and its normal, the analytic equation of ellipse normal solution is built as well as the complicacy of analytic method.
和几何单反射椭圆模型。
在 双 曲空间中引进相应的椭圆概念、讨论椭圆的方程，并对椭圆的对称性等几何性质做出细致考察。
The concept of ellipse is extended to hyperbolic space and the equation is discussed. Some geometric data of ellipse, such as symmetries, will be considered.
对过椭圆外一定点的法线作图问题作了探讨，指出了几何作图法的不可解性。
This paper discusses the graphic problem of ellipse normal through a point outside the ellipse. Concluded are the unsolvability of geometric graphic method to solve this problem .
分析了球头铣刀平面形刃口曲线在设计和制造中存在的问题，提出了球头铣刀椭圆形刃口曲线的成形原理和几何模型。
The problems existing in designing and manufacturing ball end milling cutters are analyzed, the forming theory and geometrical model for the elliptical edge of ball end milling cutters are proposed.
通过三维光弹实验测定了轴表面横向半椭圆裂纹的应力强度因子（SIF），并计算了与光弹轴裂纹几何及当地应力相对应的无限大体的SIF，从而求得SIF修正系数。
The SIF and its correction factor of the transverse surface semi-elliptic crack of a photoelastic axle are tested and studied with the method of three dimensional photo-elastics.
通过三维光弹实验测定了轴表面横向半椭圆裂纹的应力强度因子（SIF），并计算了与光弹轴裂纹几何及当地应力相对应的无限大体的SIF，从而求得SIF修正系数。
The SIF and its correction factor of the transverse surface semi-elliptic crack of a photoelastic axle are tested and studied with the method of three dimensional photo-elastics.
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