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Based on ideal deformation theory, the authors developed a finite element inverse approach for sheet metal forming process simulation, and the computer program was implemented.

依据理想形变理论，研究开发了冲压成形过程模拟的有限元逆算法，并考虑了成形中的压边力，拉延筋等工艺条件，实现了计算机程序。

In this thesis, the results of extremal work path theory are adopted, and the FEM based on deformation theory is formulated. The Inverse Finite Element Approach in sheet metal forming is studied in detail, and an Object-Oriented Finite Element Analysis program is developed, which provides rapid and effective means for stamping process planning and die design.

本文运用极值路径理论推导出基于形变理论的有限元公式，研究了钣料成形有限元逆算法，开发了面向对象的有限元分析程序，为冲压工艺和模具设计提供了快速有效的分析手段。

Numerical simulation is carried out by finite element inverse approach. The initial blank shape and stress, strain states have been obtained. At the same time, the formability of the fender has been analyzed. The possible defects in the sheet metal forming process are estimated, and several ways are provided to prevent and control these forming defects.

本文还以汽车后翼子板为例，使用有限元逆算法模拟计算得到了其初始毛坯形状、最终构形的应力应变状态及厚度分布，并进行了板料成形性分析，预测了冲压过程中可能产生的成形缺陷，探讨了预防和控制缺陷产生的措施。

In this work six new metal iodate s have been prepared by hydrothermal method at 170℃, and their crystal structures have been determined.

本文作者在170℃下用水热法制备了六种金属碘酸盐的单晶，并对它们的结构进行解析。

Under the laser irradiation,the characteristics of the metal ion in the deposition processes are described in the paper.

文摘：介绍在镀液中，在激光光束作用下，金属离子沉积过程的一些特点，并对其原因进行了简单的探讨。

Organic sulfur can promote the deposition of metal ion.

有机硫对重金属离子有极强的沉淀作用，Cd和UV-B复合作用时协同促进了有机硫分泌。

Diamond-like carbon films have been synthesized by metal plasma immersion ion implantation and deposition on 9Cr18 bearing steel.

采用金属等离子体浸没离子注入与沉积技术在9Cr18轴承钢基体表面合成了类金刚石薄膜。

In this paper, the effects of positive charged ion-pair reagents on the retention of positive charged metal chelates and negative charged ones are studied in detail.

目前对其作用机理的研究主要集中于有机物，对离子型金属配合物保留的影响机理研究极少，且无定论。

The studies about the effect of ion-pair reagents on charged metal chelates are limited, and have no definite conclusions.

流动相中引入对离子试剂使反相HPLC的应用范围扩大到离子型化合物。

We also studied the influence of metal ion on the structure of complex.

我们研究了金属离子的性质对配位化合物结构的影响。

London based fashion photographer Matt Irwin might be is the next big thing in fashion photography.

总部位于伦敦的时装摄影师马特欧文可能会是下一件大事的时装摄影。

Based on IMC system,the response would be better if the model matched more satisfactorily.

由于系统基于内模控制设计，故模型匹配度越高，系统响应越好。