查询词典 asymptotic curve

Pull command: A bug that caused loops when a curve was pulled to a surface of revolution is fixed.

属性对话框：修正符合物件的材质时作业不正确的错误。

You can use surface from curve network or patch to build the corner surface.

您可以使用曲线表面由网络或修补程序，以建立角落表面。

Firstly, the developing principles of the cylindrical internal helical gear are proposed through analyzing the movement and geometry requirements, which provides continuous contact between the mating gear surfaces. The tooth surface of the internal helical gear in the new gearing can be imagined as being generated by the normal section of the conjugated surface of the ball-tooth, moving along the radial projection of helix line of the tooth-root circle. Also, the proposed surface can be approximate tangent to the conjugated surface of the ball-tooth along a spacial curve.

首先，通过分析保证行星轮作螺环运动时与内斜齿轮实现连续啮合传动的运动和几何条件，提出了圆柱内斜齿轮齿面的两种形成原理：即由球齿运动包络曲面的法截面沿其齿根圆螺旋线在径向的投影进行拓展所形成的内齿面，以及与球齿运动包络曲面呈近似相切接触的等螺距齿面构成的内齿面。

Adopt software of Surfacer to fit curve and remodel surface, go on analysis of error and continuity, make model surface achieve rang of smooth and precision.

利用Surfacer软件对点云进行曲线拟合以及曲面重构拟合，通过对拟合曲线和自由曲面的误差分析以及连续性的分析，使构造的自由曲面光顺度和精度均满足要求，从而实现理论与实际的相结合。

In the latter generations of rice suspension cell, the activity of extracellular POD and the cell suspensibility curve raises at first and then declines. The activities of extracellular POD induced by exogenous H_2O_2, CaCl_2 and VK3 are different and the same concentration of VK3, CaCl_2, H_2O_2 can all inhibit extracellular POD activities, especially to the callus tissue subculturing for six times.

外源H_2O_2，CaCl_2与VK3诱导悬浮细胞所产生的胞外POD活性并不相同，相同浓度的VK3、CaCl_2和H_2O_2都抑制胞外POD活性，对继代六次的愈伤组织的悬浮细胞胞外POD活性影响最大，H_2O_2对POD的抑制作用更为强烈。H_2O_2随浓度和处理时间的增加，使胞外POD的活性减弱；处理6h、12h，胞外POD活性随着VK3和CaCl_2浓度的增加而增强，但处理48h胞外POD活性随浓度的增加而减弱。

Deploying rock-solid numerics with world-class symbolics, Maple 9.5 offers full computing support for any activity involving mathematics. Supporting this powerful technology is a rich user environment unsurpassed in ease-of-use and an extensive range of features to shorten the learning curve and to maximize productivity gains.

它是当今世界上最优秀的几个数学软件之一，它以良好的使用环境、强有力的符号计算、高精度的数值计算、灵活的图形显示和高效的编程功能，为越来越多的教师、学生和科研人员所喜爱，并成为他们进行数学处理的工具。

Using the straight line which crosses the center point and the crossing point, this paper, puts forward the way choos a certain point on the symmetric axis as an instrument station and then staking out the curve center line point and boundary line point .

提出了以通过圆心和交点的直线作为曲线对称轴，在对称轴上任选一点为测站点，进行曲线中桩及边桩放样的方法，供同行参

In this paper,the rational approximation of the offset curve of Bézier curves is obtained when a polynomial of symmetric power basis is used to approximate the norm of parametric speed of Bézier curves.

等距曲线逼近技术的关键在于参数速度的逼近，文章用S幂基多项式逼近平面Bézier多项式曲线的参数速度模长，得到Bézier多项式曲线的等距曲线的有理逼近曲线，所得有理多项式逼近曲线与等距曲线在端点处能够达到高阶插值。

This article mainly simulates gradually damage destruction process of rock, major in determinationg the definition of rock three-dimensional damage tensor, simplify to the damage tensor and obtain its engineering calculation method, and obtains the basic expression form of equivalent stress by equivalent stress assumption, symmetrization to the actual stress, thus obtains construction relation of the festival principle of three-dimensional damage rock mass, finally couples elasticity- plasticity with damage in the finite element equation, with reference to elasticity-plasticity gradually degenerated method thought, simulates rock damage to advance gradually the destruction process in finite element method, draws up elasticity - plasticity and damage coupling two-dimension finite element procedure with the C language in the VC contact surface, by simulating experiment destroyed process, acquires destruction image and the axial load distortion curve of model, agreement with the experimental result.

本文主要模拟岩石渐进损伤破坏过程，确定岩石三维损伤张量的定义，对损伤张量进行简化计算并得出其工程计算方法，采用等效应力假设得出有效应力的基本表达形式，对有效应力进行对称化，得出节理损伤岩体的三维本构关系，在有限元方程中实现弹塑性和损伤耦合；借鉴弹塑性渐进退化方法的思想，采用有限元的方法模拟岩石损伤渐进破坏过程，用C++语言在VC界面编制了弹塑性和损伤耦合的二维有限元程序，通过模拟已有的实验破坏过程，得出模型的破坏图像和轴向荷载变形曲线，与实验结果基本一致。

On the base of these tested results and other experimental data of environment temperature, main factors which affect the temperature distribution are analyzed, the viewpoint that periodical environment temperature can be simplified as a syntonic curve is presented.

在现场试验研究和其它环境温度的大量实测资料的基础上，对影响预应力混凝土构件内部温度分布的主要因素进行分析，提出了周期性变化的环境温度可在数学上简化为一条简谐波曲线。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。