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First it concludes elementary methods for product modeling such as feature recognition, feature-based design and feature mapping. Then it probes into the mechanism of constraint-based feature parametric modeling, representation of feature parametric model and methods for solving constraint in details. At the end it proposes a feature-based modeling system that makes good use of resources and synthesizes many feature modeling methods, and analyses the development of prototype system oriented to actual application.

首先全面归纳了基本的基于特征的产品建模方法，包括特征识别、基于特征设计和特征映射方法，然后对基于约束的特征参数化建模、特征参数化模型的表达和定义方法以及约束求解方法进行了深入研究，最后提出了一个充分利用现有资源，特征识别、基于特征设计和特征映射共用的特征建模系统，并探讨了面向实际应用的原型系统的开发技术。

This project is to analyze the distribution of the light in the high-power laser system, it bases on principles of ray optical, use the paraxial ray trace and real ray trace , proposes a new data structure and way to simulate the light in the optical system in the computer.

本课题就是以含衍射元件的大功率激光装置中由于多次残余反射形成的鬼像为研究对象，从光线光学的基本原理出发，应用近轴光线与空间光线追迹相结合的技术路线，提出一种新型的分析方法和数据结构，开发出用于含衍射元件的高功率激光系统杂散光分析的软件。

In order to made up the present imperfection in unit velocity modulation and logical control of domestic cableway, this parer proposes a new project for the electricity control system of Zhougongzhai cableway. This project adopts a full digital current changer and PLC, with optical fibre instead of multi-line cable.

为了弥补目前国内缆机在机组调速和逻辑控制方面存在的一些缺憾，本文对周公宅缆索起重机的电气控制系统项目提出了一种新的方案，该项目采用了全数字直流变流器加 PLC 的技术，并采用光纤代替多芯电缆。

Second part explains fund management company with agency theory and proposes that its development should base on maintaining interests of fund investors.

指出基金管理中委托代理关系的特殊性，并由此提出基金管理公司发展应立足于维护基金投资者利益这一观点。

This paper proposes a novel processing resources scheduling algorithm oriented advanced Network Processors,called Duplication-base Partial Dynamic Scheduling.It aims to improve the NP performance by combining the strategies of partial dynamic mapping and task duplication.

提出一种新颖的面向高级网络处理器的处理资源调度算法，称为基于复制的部分动态调度算法（Duplication-base Partial Dynamic Scheduling，DPDS），结合部分动态映射及任务复制策略，以改善NP的性能。

This paper also proposes a graph based hierarchical clustering algorithm to solve the cell partition problem.

本文对小区划分进行了形式化的描述，首次提出了采用聚类解决小区划分问题的思想，并且提出了一种基于图模型的层次聚类算法。

This article first analyses the drawbacks in the pattern of collective land ownership in China's rural areas regarding to its subject, object, rights and management, and then proposes some constructive suggestions.

本文试图从农村集体土地所有权的主体、客体、权能以及管理的现状，分析我国现行农村土地所有权存在的问题，并同时提出自己的一些完善见解和建议，以期能对完善我国集体土地所有权制度有所助益。

This paper stresses the significance of production pattern impacting on resources and environment, and proposes a theoretical framework for study of economics of population, resources and environment.

江泽民同志在党的十五大报告中提出"实施科教兴国战略和可持续发展战略"，"坚持计划生育和保护环境的基本国策，正确处理经济发展同人口、资源、环境的关系"[1 ] 。

According to land use policy in Lao PDR, a land with slope angle larger than 45 degree should not be used for any proposes.

根据老挝的土地使用政策，坡度大于45度的土地不能用于任何目的的开发与使用。

The paper proposes evaluating Pearl S. Buck reasonably and giving her position in the history of literature.

本文倡议要合理的评价赛珍珠，以恢复她在文学史上的应有地位。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失