周期的模

Based on the characteristics of structure design for blanking die, a solution for knowledge-based structure design is proposed.

一、引言模具结构设计是冲裁模设计的重要环节，直接影响着模具和冲压件的质量、成本和生产周期。

It introduces normal families, including equicontinuity, Arzela's theorem, Montel's and Marty's theorems, Zalcman's lemma; univalent functions, including Koebe's and de Branges' theorems; quasiconformal mappings, including conformal length, extremal length, geometric, analytic and metric definitions, quasiconformal extension, distortion theorem, quasicircle; iteration of rational functions, including fixed points, the Fatou and Julia sets, periodic points, Siegel disks, the Hausdorff measure and dimension, etc.

具体为：正规族，包括等度连续性、Arzela定理、Montel和Marty正规定则、Zalcman引理；单叶函数，包括Koebe定理和de Branges定理；拟共形映照，包括共形模、极值长度、几何、分析和距离定义、拟共形延拓、偏差定理，拟圆周等；有理函数的迭代，包括不动点、Fatou集和Julia集、周期点、Siegel盘、Hausdorff测度和维数，等等。在教学内容上充分体现综合性、前沿性。

Advantage more and more was hurtle to press aspect to process of welcome.

本课题是针对五菱微型汽车前挡泥轮窝冲压成型机设计，主要是针对液压成形因具有制模简单周期短、成本低而产品质量好、形状尺寸精度高等优点越来越受到冲压方面加工的欢迎。

Find that when the intensity of driving current is not much smaller, action potential of the cell oscillates in mode-lock style.

另外还研究了在周期电流驱动下系统的运动，发现在驱动电流振幅不是很小时，系统作锁模运动。

The results show that both VIMT by ASM and summer rainfall in China exhibit obvious biennial rhythms as revealed by time coefficient of the leading EOF mode.

分析结果表明，亚洲夏季风水汽输送和中国夏季降水的异常主模态呈现显著的准两年变化周期。

By taking example for bladed disk assembly, the localization of vibration mode in cyclic periodic structures is studied.

以叶片—轮盘结构为例，研究了循环周期结构的振动模态局部化问题。

Localization is able to destroy the regularity of mode of vibration in periodic structure and aberration of vibration mode occurs.

若周期结构的整体结构尺寸不是很大，那么振动模态不会遍及整个结构，出现振动局部化现象。

To resolve the problem effectively,numerical simulation is introduced to reduce production and design cycle and to improve the quality of products.

为了有效解决这一问题，本文利用数值模拟优化工艺参数，来缩短模具设计、制造和试模的周期，提高产品质量。

Using techniques of computer aided design and computer aided manufacture is important to reduce the time and the cost of developing progressive dies.

在多工位级进模领域采用计算机辅助设计与制造技术是克服传统模具生产方式周期长、成本高等缺点的一项重要工作。

The development cycle time is greatly shortened for the adoption of UG for technics digital analogy supplement, CAM for programming, AUTOFORM and FASTFORM for punch forming finite element analysis and plate elements lofting,etc..

利用UG进行工艺数模补充、CAM编程，采用AUTOFORM、FASTFORM等软件进行冲压成型有限元分析、板件展料等先进技术，大大缩短了模具的开发周期。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了