二次曲面

2If K≠0,then S can be parameterized as S is a quadratic cone or a elliptic cylinder.

2如果K=0，则曲面S可以表示成此时S是一个二次锥面或椭圆柱面。

On the basis of the Updated Geometrical Method and Secondary Geodesic Line Method, the technique to find Geodesic Line between any two points in the curved surface is suggested.

在修正几何法和二次测地线法的基础上，解决了空间有限曲面上两点间无法做出测地线的问题。

Instead of widely used parametric representation of surfaces, a planar facet scheme was used to obtain the painting surfaces approximately.

根据实验数据确定平面上的涂层累积速率二次函数后，建立了自由曲面上的漆膜厚度数学模型。

Basing on the coordinating equations of multivariate spline space, we firstly study the smooth connection problem of the bivariate quadratic polynomial spline functions which defined on the polygonal region with one interior net

最后说明了在一种类1—型三角剖分上二元二次样条函数s∈S_2~1的存在性及在其上曲面光滑连接的可行性。

In this paper, the main work is about the binary quadratic form of NURBS.

本文的主要工作就是围绕二元二次NURBS曲面展开的。

Quadratic response surface regression model Level of medical service Contour plot Residual plot

二次响应曲面回归；医疗服务水平；趋势图；剩余图

For an empirical second-order response surface model, the objective is to determine the location, response and nature of the stationary point.

对一个二次反应曲面模式而言，其目的是决定稳定点的位置、反应值，以及本质为何(最大值、最小值或马鞍点)。

In this paper, the optical design of the LED streetlight and the calculation methodology of a freeform optics for the streetlight was put forward.

介绍了LED路灯的光学设计，及一种用于LED路灯的自由曲面二次光学透镜的设计方法。

By way of the reverse design on the standard tooth with Surfacer, it has realized rebuilding the three-dimensional model for the complicated surface of standard tooth, which is the base of the proceeding CAD design and development.

通过在Surfacer中对标准牙齿反求设计，实现了标准牙复杂曲面3D几何模型的重建，为后续的CAD设计及在此基础上的二次开发奠定了基础。

In this paper,we give a sufficient and necessary condition for the level surface s with respect to non-degenerate quadratic functions by the usage of the Hessian metric and of a transversal vector field.

本文利用Hessian度量和横截向量场，给出了非退化二次函数的水平曲面的一个充要条件。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。