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
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。
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。
Calculation of transverse slope between transition zone of reverse curves;
反向曲线间横向坡度的过渡计算
When the curvatures are in the same direction, the part with bigger curvature tends to reduce its curvature value.
在曲率方向相同时,曲率大的部分有向曲率减小的部分变化的趋势。
Some Properties of Finsler Metric with Isotropic Curvature;
具有迷向曲率的Finsler度量的某些性质
Pseudoumbilical Submanifolds with Parallel Mean Curvature Vector;
具有平行平均曲率向量的伪脐子流形
Submanifolds with Parallel Mean Curvature Vector of Constant Curvature;
常曲率空间中具有平行平均曲率向量的伪脐子流形
Submanifold with Pararrel Mean Curvature Vector and Positive Curature in a Unit Sphere;
单位球面中具有平行中曲率向量的紧致正曲率子流形
The Compact Pseudo-umbilical Submanifold with Parallel Mean Curvature in the Constant Curvature Space;
常曲率空间N~(n+p)(c)中具有平行平均曲率向量的紧致伪脐子流形
On the Pseudo-umbilical Submanifolds with Parallel Mean Curvature Vector in Constant Curvature Space;
常曲率流形中具有平行中曲率向量的伪脐子流形
The Compact Pseudo - Umbilical Submanifold With Pallaedmean Curvature In The Constant Curved Manifold S~(n+p)(c);
常曲率空间S~(n+p)(C)中具有平行中曲率向量的紧致伪脐子流形
The compact pseudo-umbilical submanifold with parallel mean curvature vector in the Riemannian manifold with constant curvature
常曲率黎曼流形中具有平行中曲率向量的紧致伪脐子流形
On submanifolds with parallel mean curvature in a locally symmetric quasi-constant curvature Riemannian manifold
局部对称拟常曲率黎曼流形中具有平行平均曲率向量的子流形
The Position Vector Field of a Special Curved Surface with Equal Principal Curvature Function in the 3-Dimentional Minkowski Space;
三维Minkowski空间中有相等主曲率函数的一类特殊曲面的位置向量场
medium-radius lateral drilling
中曲率半径侧向钻井
On Randers Metrics of Isotropic S-Curvature
具迷向S-曲率的Randers度量
The Complete Hypersurface with Constant Mean Curvature in the Quasi Constant Curvature Space
拟常曲率空间中具有常平均曲率的完备超曲面
The limit of this ratio as the length of the arc approaches zero.
曲率极限当弧长趋向于零时该曲率的极限
The cumulative rate curves of problem eating behavior increased by the age of 3 years.
有问题饮食行为的比率累积曲线，在三岁以前向上增加。
On Exponential Metrics with Isotropic S-Curvature and Finsler Metrics Which Are Projectively Equivalent to a Riemann Metric;
关于具有迷向S-曲率的指数度量及与黎曼度量射影相关的Finsler度量
Submanifolds with Parallel Mean Curvature Vector in Local Symmetric Spaces;
局部对称空间中具有平行平均曲率向量的子流形