A new and simple proving method on the famous theorem of total torsion, "the total torsion of closed spherical curve is zero", and two generalized theorems for the. theorem are presented in the paper.
本文给出了关于全挠率的一个著名定理：“球面闭曲线的全挠率为零”一个新的简单证法，并且给出了这个定理的两个推广定理。
A clothoid curve is used with its fine feature for the shape of transition section between spherical head and cylindrical shell of pressure vessel.
利用回旋曲线的优良特性，将其做为压力容器部分半球形封头与圆柱筒体之间的过渡曲线，实现了在连接边缘上无附加边缘应力的光滑连接。
Based on the stereographic projection that preserves Pythagorean-Hodographs, a spherical rational ph curve is constructed to solve this problem.
基于球极投影保持PH性质这一特性，通过球极投影把球面数据投影到平面上，构造一条平面PH曲线。
According to the principle of profiling machining of involute spherical gears, this paper designs the accurate involute profile curve of its finger milling-cutter.
根据渐开线球齿轮的仿形加工原理，设计一种具有渐开线齿廓的指状铣刀。
Spherical or oval-shaped curve, we have a dish antenna.
球形或椭圆形曲线，我们有一个碟式天线。
The large curvature of the Earth appearing in the visor reflection is not the true curvature of our spherical Earth, but rather an artifact of the curve of the space helmet.
头盔反射看到的巨大的地球弯曲度并不是我们球形地球真正的弯曲度，而恰恰反映的是太空中头盔弯曲度。
In order to realize dynamic real time detection of spherical 3d location, a fast searching algorithm for elliptical curve based on prediction is proposed.
为了实现对球体三维位置的动态实时检测，提出一种基于预测的椭圆曲线快速搜索算法。
In order to realize dynamic real time detection of spherical 3d location, a fast searching algorithm for elliptical curve based on prediction is proposed.
为了实现对球体三维位置的动态实时检测，提出一种基于预测的椭圆曲线快速搜索算法。
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