1) oriented curves
有向曲线
2) signed curvature
有向曲率
1.
The PH quintic has continuous unit tangents and signed curvature, and its arclength function is the polynomial of its parameter.
所得五次 PH插值曲线不但具有连续的单位切矢和有向曲率 ,而且其弧长函数是原参数的多项式函数 ,具有精确的有理 Offset代数表示和优美的几何解释 ,可灵活处理拐
3) oriented surface
有向曲面
4) return curve
转向曲线
1.
From theoretical analysis,the kinematic and dynamic characteristics of the grooved drum of glass roving winders are compared between using arc and parabola as the return curve on the grooved drum,based on which a new equation is deduced from a new kinematic law.
从理论上分析比较了圆弧、抛物线作为玻璃纤维络筒机槽筒沟槽转向曲线时槽筒的运动特性和动力特性,在此基础上提出了新的运动规律,推导了运动方程。
5) longitudinal tooth curve
齿向曲线
1.
This paper develops a mathematical model for the solution to the longitudinal tooth curve of an internal gear shaver based on the simplified principle for space transmission of a helical gear pair without flank clearance,and proposes a calculating approach of the profile modification of the grinding wheel to be used for grinding the longitudinal tooth curve of the shaver.
用简化的空间螺旋齿轮作无侧隙啮合传动的原理,建立了求解内剃齿刀齿向曲线的数学模型,并给出了修磨这种齿向曲线的盘形砂轮的廓形计算方法。
6) reverse curve
反向曲线
1.
Calculation of transverse slope between transition zone of reverse curves;
反向曲线间横向坡度的过渡计算
补充资料：Hesse曲线(代数曲线的)
Hesse曲线(代数曲线的)
Hessian (algebraic curve)
11油限曲线(代数曲线的)【H台自11(.妙如允.抖e);recc咖，T~aaa，即r药pa一吸ee二o‘二p.助蓝] n次代数曲线(司罗玩水c~)的He丈祀曲线就是其极二次曲线能分裂为两条直线的点的集合，也是第一极曲线的二重点构成的集合.n次非奇异曲线的He丈七曲线是一条次数为3伪一2)、类为3(n一2)(3n一7)的曲线.设介O是这条n次曲线的齐次坐标方程，关丘=刁:f/刁xi刁、，则它的He丈犯曲线的定义方程为 !不:关:五，} }五:关:五31=0. }人，人2人3}特征不等于3时的三次非奇异曲线的H既七曲线与这条曲线交于9个通常拐点.因O.H改e(l 844)而得名. A .E.H困阳。B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