查询词典 concave curve

Cutter blade in the face of the modeling, this paper presents a basic model of ideological confrontation flank milling reasoning and mathematical algorithm: First, the establishment of the cutter edge cross-section curve and the equation ruled surface and then through the algorithm to generate cutter rake face and the flank, Bezier curve-based algorithm to generate the surface of the spiral groove cutter in order to achieve the opposite blade face milling modeling.

在立铣刀的刃面的建模方面，本文提出了一种基本的建模思想对立铣刀的刀面进行数学推理和算法实现：首先建立立铣刀的刃口曲线及横截面的方程，然后通过直纹面生成算法建立立铣刀的前刀面和后刀面，通过基于Bezier曲线的曲面生成算法建立立铣刀的螺旋槽，从而实现了对立铣刀刃面的建模。

We prepared bulk samples of metastable solid solutions with bcc and fcc structuresin the Fe-Cu system by using shock compression with mechanical alloying, and the magnetization and valence electron were measured and calculated. The saturation magnetic-moment curve versus mumber of electrons per atom at 0K was found to be reasonably similar to the-electrons/atom curve of other transition-metal binary systems.

用机械合金化锻压方法制备了bcc和fcc结构的块状亚稳态Fe-Cu固溶体系统，并对系统的磁化强度、价电子结构进行了测量和计算，从亚稳态 Fe-Cu固溶体的饱和磁化强度Ms-e/a曲线可看出：大约在26.2e/a的区域Ms有最大值，并且在大约28.6e/a的区域接近零。

The cohesion and the internal friction angle are functions of water content index; cohesion-degree of saturation curve and internal friction angle-degree of saturation curve are gotten by simulating shear experiment through different paths, through which shear strength parameters can be obtained; CDSC and IFADSC are approximating straight lines in the same path when the change of saturation degree is small.

非饱和土抗剪强度的黏聚力和内摩擦角是含水指标的函数；通过模拟不同路径下非饱和土抗剪试验，得到黏聚力-饱和度曲线和内摩擦角-饱和度曲线，进而得到非饱和土抗剪强度指标；在同一路径小区间范围内CDSC和IFADSC曲线近似为直线。

In establishing the repetitive pattern of transient tearing that creates the saw-toothed curve, it is not uncommon to have the initial or final peaks, or both, be inconsistent in magnitude with those in the center of the curve.

在建立重复的格局瞬时撕裂造成锯条齿曲线，它并不鲜见，有初步或最后的高峰，或两者不一致，在规模与那些在中心的曲线。

By investigating the elliptic curve cryptosystems, the problems are reduced the fast computations of scalar multiplication of the elliptic curve.

通过对椭圆曲线密码体制的研究，将快速实现椭圆曲线密码的问题归结为标量乘法的实现效率。

The shortest path approximation algorithm builds a weighted graph from the given set of scattered points using the distribution of these data points. By computing the shortest path in the weighted graph, the problem of curve reconstruction from scattered data points is transformed into that of curve reconstruction from a set of ordered data points.

最短路逼近算法首次将图论中最短路径理论引入到曲线重建中，根据散乱数据点的分布构造带权连通图，通过求解带权连通图的最短路径，将散乱数据点集的曲线重建问题转化为有序数据点集的曲线重建问题。

Based on the qualitative interpretation,the effect of transition segment of a stress-strain curve has been emphasized;phenomenon relating to strain rate effect have been adequately discussed,such as the stress-strain curve of a given strain rate, the increase of strain rate sensitivity of a metal with temperature,the decomposition of strain rate effect and strain hardening and multi-step loading tests.The analyses agree with the existing experimental results and update the knowledge on strain rate effect.

对材料应变率敏感性随温度变化的现象进行了分析，所得结论与现有试验结果相符；对晶体材料在恒应变率加载下的应力应变曲线进行了分析，明确提出了应力应变曲线中受应变率直接影响部分—过渡段的概念；结合位错运动分析，对恒应变率加载下晶体材料的应力应变曲线进行了解释，深化了对应变率效应的认识；提出了应变率效应与应变硬化效应可分别研究的观点，完善了对应变率效应细观机理的认识。

The one Presented here is used to determine the parameters of double linear softening curve of Frictious Crack Model by fitting the experimentally measused P－δ curve segmentally.

其一是提出了分段拟合实测P～δ曲线确定虚裂缝模型的双线性软化曲线参数的数值方法。

Because the triangle mesh was widely used in industry and computer graphics systems,a computation method for offset curve on triangle meshes was proposed,where the curve on the triangle mesh was defined by a sequence of points with every point lying on the mesh.

鉴于三角网格在图形系统和工业界广为使用，提出了一种三角网格上曲线等距线的计算方法，其曲线表示为位于三角网格的点序列连接而成的空间折线。

It offers the idea according to problem faced, considering the good character of the ends,the ajusted cubic B-spline curve is used to fit ship lines.it finds out the control vertexs according to a sequence of given points,and then, through particular formula,each point in the curve could be worked out.

针对面临的问题，提出了自己的思路，在数学计算方法上，由于三次准均匀B样条曲线良好的端部性质，这里用它来拟合船舶型线，首先根据所给的初步型值求出其控制顶点，然后根据相关公式进行插值便能得到曲线上的所有插值点。

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？