1) Geodesic torsion
测地挠率
1.
The torsion of the intersection curve of two surfaces in R3 can be expressed by geodesic torsions, normal curvatures and the angle between surfaces.
即两曲面交线的挠率可以用两曲面的测地挠率、法曲率及两曲面的夹角表示。
2) geodesic main torsion
测地主挠率
1.
By giving the definitions of geodesic main torsion and torsion line,discussing their some properties.
给出了测地主挠率和挠率线的定义,讨论了测地主挠率和挠率线的一些性质。
3) torsion
[英]['tɔ:ʃn] [美]['tɔrʃən]
挠率
1.
Intlationary Model In Scalar-Tensor Theories With Torsion Of Gravity;
含挠率的标量——张量引力理论的暴涨宇宙模型
4) geodesic curvature
测地曲率
1.
Based on the geodesic curvature calculating method in differential geometry,a mathematical model for checking curvature interference between the major cutting edge and the cylindrical grinding wheel during grinding clearance face of a ball nose end milling cutter with S shaped major cutting edge is developed.
用圆柱形砂轮刃磨球头立铣刀端刃后刀面时 ,运用微分几何学中的测地曲率算法建立了砂轮与S型刃的曲率干涉校核数学模型。
2.
Since the curvature vector of a curve on a surface can be decomposed into normal curvature vector and geodesic curvature vector, a surface curve can be designed first on a plane and then mapped onto the surface.
给出一种在给定光滑曲面上进行曲线设计的算法由于曲面上曲线的曲率向量可分解为测地曲率向量与法曲率向量的和,故可以通过设计平面源曲线,并将这条源曲线保测地曲率对应到给定曲面上,得到一条测地曲率和平面源曲线的曲率相同的目标曲线 取给定曲面上一点为初始点,逐次迭代跟踪得到整条目标曲线该算法既可以用来进行曲面上的图案设计,也可用于求解光滑曲面上的测地
3.
Some geometric data of ellipse in hyperbolic space are considered,such as set inclusion,arc length,geodesic curvature,curvature,area and total curvature.
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。
5) borehole torsion
井眼挠率
6) geodesic torsion
短程挠率
1.
Relationships between normal curvature and geodesic torsion of conjugate surfaces of gearing tooth in three dimension space and its application;
空间共轭啮合齿面间的法曲率和短程挠率的关系及其应用
2.
A calculating method for finding the induced geodesic torsion was developed by using differential geometry and other mathematics tools.
为了分析线接触共轭齿面的诱导短程挠率 ,并清楚地诠释有关公式及计算推导的过程 ,运用微分几何、向量代数、线性代数等数学工具 ,寻找了一种计算诱导短程挠率的方法。
补充资料：挠率形式
挠率形式
torsion form
挠率形式[to‘佣肠幻n;即y，e.“，扣pMa] 仿射联络(日肠1℃connection)的位移的向量值1形式的共变微分，即2形式 0=D.=d臼+8八.，其中0是联络形式.挠率形式满足第一B坦n‘hi恒等式(firstB血nchi ldentify): dQ=8八Q+。八0，其中。是给定联络的曲率形式(curvature form).约化联络的挠率形式的定义是类似的. M.H.Bo汕ex佣exH众撰
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条