曲线的曲率

Planar discrete clothoid splines and discrete clothoid spline surfaces of Schneider and Kobbelt are just constructed by assuming that the curvature of the curves or surfaces is piecewise linearly distributed.

Schneider和Kobbelt的平面离散布状样条曲线和封闭控制网格上的离散布状样条曲面正是利用曲率逐段或逐片线性分布构造出来的。

Analyse the distributive law of shear-lag effect and influence of each structural parameter: pile length , bending stiffness of pile, bending stiffness of abutment, abutment length, different type of soil behind abutment, curve radius, width to span ratio,width of beam, etc. And the main influencing parameters were picked up.

进行结构参数分析，研究等代桩长、桩的纵向抗弯刚度、桥台纵向抗弯刚度、桥台高度、台后土压力、曲率半径、宽跨比及箱梁肋板间距等对剪滞系数的影响，从而得到影响无伸缩缝曲线箱梁桥剪力滞效应的主要参数和次要参数。

The improved model not only preserves zero gauss curvature structures, such as straight edges, curvy edges, corners, ramp and small-scaled features and edge, but also enhances the sharp edge.

新的模型不但可以保持零高斯曲率的图像特征，如：直线边缘、曲线边缘、角点、斜坡和小尺度特征，还可以增强尖锐的边缘。

According to generating finite element model by meshing for special-shaped section columns, a computer program using the digital iteration method for full range analysis of special-shaped columns is complied. By the analytical results,"M-φ" related curves are obtained, at the same time, differences of ductile behavior, and bearing capacity are analyzed.

通过异形柱截面的有限元单元网格划分，用数值方法编制了计算机分析程序，通过计算，可以得到以上各种截面柱的弯矩—曲率关系曲线，分析它们在延性和承载力等性能方面的差异。

The type of hysteresis loops can arbitrarily be chosen, and the corresponding element stiffness matrix can be built up in a simple way.

弯矩—曲率恢复力曲线可以是任意的，而相应的单元刚度矩阵的建立较为简单。

Then using polynomial as digital filter, it gains smooth curve function to depict the metatarsus region edge.

然后，由高次多项式进行数字滤波，再对滤波后的边缘曲线，利用先验知识，依据平均曲率的变化，自适应地选取不同的函数模型，提取出相应特征，自动识别边缘形状。

As a result,the tooth profile equations, helix angle equations,limit curve equations and induced normal curvature equations for worm and internal gear are obtained.

介绍了一种新型的传动机构超环面行星蜗杆传动，运用啮合理论的包络法建立了这种传动中行星轮与蜗杆、行星轮与内齿轮啮合的基本方程，进而得到了蜗杆和内齿轮的齿面方程、螺旋升角方程、界限曲线方程及诱导法曲率方程等。

Firstly, the curvature continuity conditions between two adjacent rational quadratic curve segments are derived. Secondly, an optimal algorithm is presented for solving out the tangent lines at every points of a closed point set in a plane.

首先导出了两相邻二次曲线段间曲率连续的拼接条件，然后提出了求解平面上一个闭的点列中每一点处的切线的最优算法。

In order to satisfy the requirements of good continuity and fast-respondability of the parison thickness controlling, a new algorithm of adaptive data sampling based on curvature was proposed.

根据型坯壁厚控制的连续性和快速响应的要求，设计了基于曲率的壁厚曲线自适应数据采样算法。

Within certain flow rate range, by comparing with straight tube, equivalent friction factor versus Renolds number and geometry property are correlated.

本文对几种盘绕方式和曲率半径的弯曲盘管在一定流量范围的水阻力进行了实验研究，与同条件下的直管进行比较，得出弯管折合沿程阻力系数与雷诺数和管道几何条件之间的关系曲线和经验公式。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。