Euler formula

Secondly, a strict definition is given to polyhedra, and the conditions are given for applying Euler ′ s formula and Gauss Bonnet Theorem to polyhedra.

对多面体进行严格的定义，给出欧拉公式及Gauss-Bonnet定理对多面体的应用条件。

In this paper, Euler's formula and Handshaking lemma is used to obtain the face chromatic number of a planar graph by solving equations.

本文在前人研究的面着色问题基础上，运用欧拉公式和握手定理通过解方程组得到连通平面图的面色数。

The acquired 3 D object satisfied the restrictive conditions of Euler formula.

求解的三维实体满足欧拉公式点、线、面约束条件.

The Revision of Euler's Formula and It's Application to the Determination of the Coeffcient of Friction in Friction Winders

欧拉公式的修正及其在摩擦提升摩擦系数测定上的应用

In this paper, the authors study the properties of hyperbolic Euler for-mula of Two-dimension, the four-dimensional hyperbolic Euler formula is put upin the domain timelike of four-dimensional hyperbolic complex space.

本文考察了二维双曲Euler公式的若干性质，在四维双曲复空间的拟时区建立了四维双曲Euler公式。

Generalized Euler formula and Its Applications

广义欧拉公式及其应用

The classic Euler formula describes the relationships between the curvature of the intersection curve of two surfaces and the normal curvatures of surfaces and the angle between surfaces.

经典的欧拉公式描述了两曲面交线的曲率和曲面的法曲率以及曲面夹角之间的关系。

In addition, Hamilton quaternion, Ma quaternion and their Euler formula similar to that of two-dimensional real signal were discussed.

讨论了Hamilton四元数、马氏四元数及其与二维实信号类似的欧拉公式。

This text introduces the accurate calculation formula on the equivalent friction coefficient of V& belt drive according to Euler formula and a new Parameter-the direction angle of friction was brought in.

本文通过推导V带欧拉公式给出了计算V带传动当量摩擦系数的准确公式。并在公式中引入了一个新的参数&摩擦力方向角。

The Paper discusses slip-limit of wire-rope along the lining for friction hoisting including shaft resistance, influence of shaft resistance and principles for selection by using Euler's formula.

本文用欧拉公式探讨了包括井简阻力的摩擦提升钢丝绳沿衬垫的滑动极限、井筒阻力的影响和取舍原则。

In this paper, we give simplified proofs of the Euler formula for normal curvatures of surfaces of R3. We derive an analogue of Euler formula for geodesic curvatures of surfaces.

本文给出了R3中曲面的法曲率的欧拉公式的简单证明。并得到一个关于曲面交线曲率及曲面测地曲率的类似的欧拉公式。