查询词典 helicoidal

Combined with the measurement for characterized curves of discontinuous helicoidal surfaces, a method using grey theory to detect unwanted asperities in the dynamic measurement of cutting edges is studied.

建立了具有普遍意义的仪器综合定位误差与曲面测量误差的基本关系式，并以此导出了曲面形状公差与测量仪器精度的关系式。

Based on this property, by solving a series ODEs we construct a two-parametric family of helicoidal surfaces under cubic screw motion with prescribed mean curvature or Gauss curvature and solve an open problem left by Beneki.

基于这一点，当螺旋面的平均曲率或Gauss曲率为给定光滑函数时，本文选取伪正交标架，使得两类螺旋面的平均曲率和Gauss曲率的表达式相对简化，通过求解一系列的非线性常微分方程，即可确定一族生成曲线，从而最终确定平均血率或Gauss曲率为给定光滑函数的双参数族螺旋面，并在这一过程中解决了Beneki等人留下的一个公开问题。

In fact, the mean curvature and Gauss curvature of any helicoidal surface are independent on rotation parameter.

事实上，三维Minkowski空间中任意螺旋面的平均曲率和Gauss曲率都与旋转参数无关。

Thus, combining this work with Benekis work, we prove that there exist any type of helicoidal surface with mean curvature or Gauss curvature being any smooth function.

这样结合Beneki等人的工作，本文证明：三维Minkowski空间中，平均曲率或Gauss曲率为任意给定光滑函数的任意一类螺旋面都是存在的，并给出了具体的参数表达式。

To simplified the designing, diagram presentation, construction and profile of helicoidal stair, the formation of helicoid is analyzed, and it′s mathematical model is studied.

为简化旋转楼梯的设计、图示、施工及剖面形状，对螺旋面的形成进行了分析，建立了螺旋面的数学模型。

A helicoidal surface in Minkowski 3-space is defined as the orbit of a plane curve under a screw motion.

三维Minkowski空间中的螺旋面是一条平面曲线经由螺旋运动所生成的曲面。

Especilly, we prove that any pseudo-umbilical helicoidal surface in Minkowski 3-space is a ￡?-scroll.

其中后两类类时伪全脐曲面的形状算子不能对角化，它们在三维Euclidean空间中没有

With the rapid development of the modem science and technology, complex helicoidal surfaces are employed more and more widely, but their t...

伴随当代科学技术的迅速发展，复杂螺旋曲面的应用越来越广泛，而对其几何精度的要求却越来越高。

Moreover, we discuss some geometrical properties about helicoidal surfaces in Minkowski 3-space.

在此基础上，讨论了螺旋面的一些几何性质。

The universality of application of helicoidal surfaces in the engineering, the importance of their performance in the certain field and the non-replaceability of their functions in the specified mechanical systems have resulted in that the technology of measurement for helicoidal surfaces has been a critical research project in the field of dimensional measurements.

螺旋曲面在工程中应用的广泛性、在一定领域中其性能的关键性以及在特定机械系统中其功能的不可替代性，决定了螺旋曲面测量技术历来是几何量计测技术中一项重要研究课题。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。