查询词典 parametric

First, this thesis introduces basic theory of CBR , and studies many aspects of typical part design case , such as case representation, case retrieval, retain etc. Second, regards design code as case code in order to integrate the case with geometrical and non- geometrical information, and realizes the parametric modifying function for 3D solid model in the condition of Pro/E. Third, for the purpose of making true of system's aided design requirement, this thesis brings forward to create part design knowledge base with AI language CLIPS, and integrates the rule based KB into the system; finally, collects and summarizes the knowledge of shaft,gear,sleave, and a sample with ladder—shaft is shown in order to verify the correction of theory research.

首先，本文介绍CBR技术的基础理论，并重点研究典型零件案例的表示、检索、修改等功能；其次，以零件设计编号为案例编号实现对案例的几何与非几何信息的集成，并实现了三维实体模型在Pro／E环境下的参数化修改功能；再次，从系统辅助设计功能要求出发，提出将基于规则的知识库嵌入到系统内部，用人工智能语言CLIPS建立零件设计知识库；最后，对轴类、齿轮类、盘套类零件案例知识进行收集、总结，并通过阶梯轴设计实例验证了理论研究的正确性。

Solano L%Brunet P Constructive constraint-based model for parametric CAD system 10.1016/0010-4485(94)90104-X Computer-Aided Design , 1994,8

刘雄伟%郑海波%屠晓明参数化特征造型中拓扑结构变异的一种解决方法计算机辅助设计与图形学学报， 2001，3

The error compensation is introduced in the interpolation algorithm to increase the interpolation point's solution precision of the parametric curve, and the reasonable simplification of the compensation expression is carried in the solution process to decrease the calculation load of interpolation.

通过引入误差补偿值以提高参数曲线插补点的求解精度，在求解过程中对误差补偿值进行合理简化以降低插补计算量。

The solvability and diagnosability problem of parametric value for network elements is studied in this paper.

本文研究了网络元件参数值的可解性与可诊断性问题。

Seeded amplification of colored conical emission and two-dimensional multicolored transverse arrays as well as simultaneously up-converted parametric amplification have been demonstrated using spectral synthesis to obtain sub-fs pulses.

基于分子调制过程，文章作者提出并发展了一系列亚飞秒脉冲产生和操控的技术；围绕频谱合成方案，利用级联二阶非线性效应，实现了多色圆锥辐射注入放大和二维多色阵列及其参量上转换放大；同时，还开展了基于飞秒振荡器及外腔增强技术的高重复频率高次谐波产生与输出耦合的相关研究。

In Chapter 6,the constructing method for parametric spline surfaceswas discussed.

第六章讨论参数形式的样条曲面的构造方法。

You would also need knowledge of the following parametric equations for the Bezier spline.

你也将需要下面的贝塞尔曲线的参数方程的知识。

The method of 3-D modeling and parametric design of cylindrical spur gear in Pro/E software is discussed.

建立了渐开线直齿圆柱齿轮参数化设计模型。

The stochastic differential equation for structures with parametric and external excitations is established by using a concise derivation methods.

本文对单自由度结构在水平与竖向地震同时作用下的随机地震响应问题进行了系统研究。

Quasi Hamiltonian system; nonlinear stochastic optimal control; robustness; robust control; parametric uncertainty; uncertain disturbance; Bouc-Wen hysteretic system; Preisach hysteretic system; minimax optimal control; stochastic stabilization; stochastic averaging method; stochastic dynamical programming principle; stochastic differential game; maximal Lyapunov exponent

国家自然科学基金；拟Hamilton系统；非线性随机最优控制；鲁棒性；鲁棒控制；参数不确定性；不确定扰动； Bouc-Wen滞迟系统； Preisach滞迟系统；极小极大最优控制；随机稳定化；随机平均法；随机动态规划原理；随机微分对策；最大Lyapunov指数

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。