然后，系统地阐明了点、各种球面曲线以及球面的园弧投影方法和性质。
It also expounds such ar projective methods and properties for points various spherical curves and sphere systematically.
对一个非球面反射镜进行了实测并对测量结果进行插值运算，进而拟合出零件面形的曲线方程。
An aspherical reflector is tested and testing data are processed by the interpolation calculation, then the curve equation of the component surface shape is fitted.
本文给出了关于全挠率的一个著名定理：“球面闭曲线的全挠率为零”一个新的简单证法，并且给出了这个定理的两个推广定理。
A new and simple proving method on the famous theorem of total torsion, "the total torsion of closed spherical curve is zero", and two generalized theorems for the. theorem are presented in the paper.
参数编程在生产实践中有着广泛的应用，尤其在手工编写铣削方程曲线轮廓和球面时更为常用。
Parameter programming has been applied to extensive practice fields, especially for milling curve contour of equation or milling and sphere surface as manual programming.
借助傅里叶级数理论建立球面四杆机构处于空间任意位置时连杆曲线的数学方程。
The relationship between the harmonic component of the coupler curves and the harmonic component of the rotation-angle function and the dimensional type of spherical four-bar mechanism is discovered.
基于球极投影保持PH性质这一特性，通过球极投影把球面数据投影到平面上，构造一条平面PH曲线。
Based on the stereographic projection that preserves Pythagorean-Hodographs, a spherical rational ph curve is constructed to solve this problem.
球面上共焦点之椭圆、双曲线，在球心投影中仍投影成共焦椭圆、双曲线。
The cofocal ellipse and hyperbola of spherical surface will also be projected into the cofocal ellipse and hyperbola in gnomonic projection.
文中给出了特征球面四杆机构摇杆摆角公式，并结合实例绘制了摇杆摆角图谱曲线。
The rocker swing Angle equations of the characteristic spherical four-bar linkages are given in...
针时非对称球面五杆机构，研究了机构的奇异轨迹曲线和灵巧度。
The singularity loci and dexterity of two degrees of freedom asymmetric spherical five-bar mechanisms are investigated.
给出了锥球头铣刀上新的刃口设计方法，并给出锥面和球面上连续的新设计方法对应的刃口曲线求解模型；
The paper introduces a new designing method of cutting edge of conical ball nosed milling cutter and the defining model of the cutting edge corresponding to the new designing method;
给出了锥球头铣刀上新的刃口设计方法，并给出锥面和球面上连续的新设计方法对应的刃口曲线求解模型；
The paper introduces a new designing method of cutting edge of conical ball nosed milling cutter and the defining model of the cutting edge corresponding to the new designing method;
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