查询词典 family of surfaces

The theory of envelopes of one-parameter family of surfaces is used to determine the surface geometry of cylindrical cam profile.

因此，基于NURBS的空间凸轮设计方法简单易行，用该方法制造的空间凸轮在高速传动时具有传动平稳、噪声低、使用寿命长等优点。

After obtaining a family of blending curves and surfaces, we construct a new energy smoothing equation for determining the parameters to get the desirable blending curve and surface.

另外，在得到的混合曲线曲面族中构造出了新的更优能量光顺方程，通过设置参数可得到合适的混合曲线曲面。

A constant in an equation that varies in other equations of the same general form, especially such a constant in the equation of a curve or surface that can be varied to represent a family of curves or surfaces.

参数，参量在相同一般类型的等式中取值变化的等式中的常数或常量，尤其是曲线方程和平面方程中能代表一类曲线或平面的常量

A curve or surface that is tangent to every one of a family of curves or surfaces.

包络线，包络面一条曲线或一个曲面，与一组曲线或曲面中的每一曲线或曲面保持正切

Mathematics A curve or surface that is tangent to every one of a family of curves or surfaces.

包络线，包络面：一条曲线或一个曲面，与一组曲线或曲面中的每一曲线或曲面保持正切

A curve that cuts all of a given family of curves or surfaces at the same angle.

线以同样的角度切割给定系统所有曲线或平面的曲线

A curve that cuts all of a given family of curves or surfaces at the same angle .

常角轨道，轨线以同样的角度切割给定系统所有曲线或平面的曲线

And when adjusting parameter t, a family of subdivision surfaces can be constructed.

文中对这族细分曲面的性质进行了较详尽的分析，并证明了在参数t不等于零时这族曲面在非奇异点处至少具有C~1连续。

An explicit mathematical representation of the exact boundary of a ball Bézier surface was given by recurring to the envelope theory of the family of bivariate surfaces in the classic differential geometry, as well as the spherical coordinates and the Cramer's rule.

根据经典微分几何中双参数曲面族的包络原理，运用球面参数坐标和Cramer法则，给出了球域Bézier曲面边界的精确数学显式表达式。

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。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。