查询词典 triangular-section step

At the first step, the predicted value is solved, which is a constant function on each triangular element.

第一步是求出单元常值近似的预估值，第二步是求Galerkin近似的修正值。

A third order ENO finite volume method for hyperbolic conservation laws on unstructured triangular mesh is introduced.In order to obtain the third order accuracy on spatial discretization,a weighted quadratic interpolation is constructed on every triangular mesh.Two point Gauss quadrature formula is also used on each edge of every triangular mesh and the third order TVD Runge-Kutta method is used for time discretization.The numerical order of convergence and the numerical result of a mesh 3 wind tunnel with one step are given.

摘 要 基于双曲型守恒律方程，对非结构三角形网格给出了一种ENO(Essentially Nonoscillatory Scheme)型有限体积格式，方法的主要思想是先对每一个三角形单元构造一个加权的二次插值多项式，而在计算交界面的流通量时采用了两点高斯积分公式以保证格式的整体精度，时间离散采用三阶TVD Runge-Kutta方法。

In Chapter 4, a symmetric triangular partitioned secant method for solving large scale sparse unconstrained optimization problems is constructed, which is a combination of a secant method and a finite difference method, and depends on a consistent partition of the columns of the lower triangular part of the Hessian matrix; it reduces the number of gradient evaluations required by Powell and Toints algorithm (the indirect lower triangular substitution algorithm) by one at every iterative step.

此算法是基于稀疏Hesse阵的下三角部分的列的相容分划的基础上建立起来的，把割线法和有限差分法有机的结合在了一起，在每次迭代中，把由Powell和Toint的算法所需要的梯度赋值次数减少了一。

Because the error of normal vector will affect Delaunay triangular technique and the form of global triangular meshes directly, it is a key step to ensure normal vector .

由于法矢的错误将直接影响Delaunay三角剖分的结果进而影响整体三角网格的形成，所以法矢的确定是生成局部逼近平面的关键步骤。

The cutting is a combination of the step-cutting of the emerald-cut diamond with some triangular faceting of the brilliant cut.

切削结合的一步，是切割的祖母绿切割钻石三角面化的一些精彩不同凡响。

The grid multi-scroll chaotic system is constructed by triangular wave series and step function sequence, and the value of the turning point and the balance point in above function are found.

提出了产生 n×m 涡卷混沌吸引子的一种新方法，用三角波函数序列和阶跃函数序列构造网格多涡卷混沌系统，找出函数中平衡点和转折点的值，并对系统的基本动力学特性进行了研究，包括理论分析和计算机模拟仿真。

At present, we can manufacture special standard product of British system,US standard,Japan standard,Gbif they are classified by the international standard and so on; we can manufacture stainless steel,copper,aluminum,carbon steel if they are classified by the material;we can manufacture the product which the diameter is Φ1.00-12.7mm,and the length is 2.5-150mm if they are classified by the dimension,the shape inside and outside,we can manufacture the standoff,the hexagonal head screw with washer,the step screw,the triangular screw, the snap SEM screw,the non-standardmuttern,the toy shft,the iron nail,the steel nail,the hexagon,wrenches,the rear hole rivet,the rivet,the floral nail etc.

目前，按国别标准分，能专业生产英制、美制、日标、国标等标准件；按材料分能生产出不锈钢、铜、铝、碳钢等类别；按大小分，能生产直径Φ1.00-12.7mm，长度2.5-150mm的产品；按形状分，能生产内外六角螺丝、六角头带垫螺丝、台阶螺丝，三角牙螺丝、子母钉钉组合螺丝、非标螺丝、玩具车轴、钢钉、铁钉、钢钉、六角板手、尾孔铆钉、拉钉、花钉等。

Delaunay algorithm technology and realize, from the triangular mesh algorithms to optimize each step are described in detail.

详细说明： delaunay的算法技术与实现，从三角网格的算法到优化每一步都有详细的描述。

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。