We discussed the existence of surfaces of rotation with given Gauss curvature function of the fourth order K(s)=-s~4+Bs~3+Cs~2+Ds+E inR~3,and gave the position vector field of these surfaces.
讨论了R3内高斯曲率为已给四次函数K(s)=-s4+Bs3+Cs2+Ds+E的旋转曲面的存在性问题并且给出了在定义域范围内这类曲面的位置向量场。
In this paper we discuss the existence of surfaces of rotation about given Gauss curvature function in R 3 and give the position vector field of these surfaces.
讨论了R3 内给定Gauss曲率函数的旋转曲面的存在性问题并且给出了这类曲面的位置向量场 。
1 〔s2〕〔s3〕〔s4〕and give the position vector field in this case.
1中一类特殊曲面在主曲率函数相等时的情形 ,给出了这类曲面在这一情形下的位置向量
In this paper,the position vector fields of the spherical and hyperbolic rotational hypersurfaces in Minkowski space are given.
给出了Minkowski空间En1+1中给定主曲率函数的球型和双曲型旋转超曲面的位置向量场,并通过计算超曲面的主曲率,证明了这类超曲面的存在性。
The position vector fields in space forms are studied.
讨论空间型中的位置向量场,建立一组统一的公式,将子流形的平均曲率向量场与位置向量及其衍生函数的Laplacian联系在一起。
Discussion on the location of the guide roll and loop-rising roll of loop device;
活套装置中导辊与起套辊位置的探讨
Influence of diameter and location of continuous curvilinear capsulorhexis to the posterior capsular opacity;
连续环行撕囊直径和位置对后囊混浊的影响
Seedling establishment of Tsuga longibracteata in different location of forest gap;
长苞铁杉幼苗在林窗不同位置的建立
Analysis of Effect of Regulating the Wind Window Position on Reducing Leak-out of the Functional Range;
浅析调节风窗位置对减少工作面漏风的作用
Analysis of Similarities and Differences between American Standard and Chinese Standard of Shape and Position Tolerance;
关于形状和位置公差的中美标准异同浅析
Influence on Yarn Quality of the Cotton Web Cleaner Position in Carding Machine Back Cover Guard;
梳棉机后罩板棉网清洁器位置与纺纱质量