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In this paper,the current research situation and problems of slurry characteristics and its mechanism in SiO_2 CMP dielectric film are present.Tribology,contact mechanics,physical chemistry,colloid chemistry,surface and interface physics and other aspects of the theory are used to investgate.

因此如何调整抛光液配方，控制材料去除率，获得更高的表面质量，建立更加完善的材料去除率模型，实现稳定的生产，满足下一代超薄介质膜的要求等，仍然是各国学者研究的热点及前沿问题。

At present it is very difficult to predict all the RNA secondary structures. This paper describes RNA secondary structure prediction methods from 1970\' to this day in a systematic way some. Tracing back and following the tracks of prediction methods the author made a summary of RNA research progress and situation while a enumeration problem of RNA secondary structure is studied with the method of combinatorial enumeration.

目前所有有关RNA二级结构的预测算法要预测出所有序列的二级结构仍然很困难，本文系统介绍了从上世纪70年代以来发展至今的各类RNA二级结构预测算法，从对RNA结构预测方法的追溯和跟踪，对当今RNA研究的进展和形势做了一个总结，并且应用组合计数的技巧解决了一类RNA二级结构的计数问题。

In order to improve the performance of aerostatic bearing and enhance the reliability of system, the chief works of this paper represents as follows: First, on the foundation of development and present research situation of internal and external aerostatic bearings, this paper summarizes the principle of aerostatic bearing, according to several assumptions of work conditions, two-dimensional Reynolds equation of isotherm compressible fluid is deduced.

为改善气体轴承的性能，提高气浮轴承转子系统的安全性、可靠性，本文进行了如下研究工作：首先，本文在综述了国内、外气体静压轴承的发展历史和研究现状的基础上对气体静压轴承基本原理进行了概述，根据小孔节流静压气浮轴承的工作状况，作了若干假设，在此基础上导出了描述气膜压力场的二维可压缩Reynolds方程。

The purpose of this dissertation lies in perfecting relative laws of administration of medical waste,according to the lawmaking and law system of foreign countries.meanwhile,the notion is provided to consummate relative law system and achieve the purpose of holding in the administration of medical waste,environment protect and human health.this dissertation puts forward first-step conceivableness of perfecting lawmaking and law system concerning the administration to disposal of medical waste.because our country's law system concerning medical waste is too immovable and abstract,this research will make our country's law system of the medical waste more concrete and more definite,which will strengthen the operability in the fulfillment and make the lawmaking spirit embodied.simultaneously it provides legal basis and policy support for the administration to disposal of medical waste.the problem of the administration of medical waste enlarges the difficulties of disposal process.to perfect lawmaking,law-executing,law-supervising.is advantageous to strengthen the administration to disposal of medical waste of our country.meanwhile it has theoretic meaning and application value for environment safety and human health.this dissertation is totally divided into four parts.the first part explains the current condition of the administration to disposal of medical waste of our country,which introduces the concept of medical waste,the harm of medical waste,the necessity of administration, current lawmaking condition and present law system of the medical waste.the second part introduces the general situation of lawmaking concerning the administration to disposal of medical waste of the united states,eu,japan and korea.simultaneously it explains the apocalypse of administration to disposal of medical waste of our country.the third part points out the existent law problem of the administration to disposal of medical waste,including lawmaking problem,law enforcement problem and law system problem.the fourth part aims at the relative suggestions to the existent law problems of the administration to disposal of medical waste of our country.the suggestions want to raise lawmaking layer,perfect lawmaking contents,strengthens law enforcement,practice the law system of the manufacturer to be responsible for the medical waste.meanwhile,it gives the advice on the punishment-compensation system,the conduct permit system and the risk fund system.

本论文研究的目的在于借鉴国外有关医疗废物在立法、执法、法律制度等方面的经验，完善适合我国医疗废物管理的相关法律，提出我国有关医疗废物管理的立法构想，完善各项相关的法律制度，以达到规范医疗废物管理、保护环境、保护人类健康的目的。本论文为完善我国医疗废物管理的立法、执法和法律制度提出初步设想，由于我国有关医疗废物的法律制度规定得太原则、太抽象，通过本论文研究，使得我国医疗废物法律制度更具体、更明确，增强在实践中的操作性，使立法精神充分得到体现。同时可以为我国医疗废物管理工作提供法理依据和决策支持。我国医疗废物管理体制的问题加大了医疗废物治理的难度，立法、执法、监督等方面的完善有利于加强对我国医疗废物的管理；在保障可持续发展的环境安全和人类健康领域也具有理论意义和应用价值。本文共分为四个部分，第一部分说明了我国目前医疗废物管理的现状，介绍了医疗废物的概念、危害、进行管理的必要性、当前我国医疗废物的立法现状和法律制度现状。第二部分介绍了美国、欧盟、日本、韩国关于医疗废物管理的立法概况及对我国医疗废物管理的启示。第三部分指出了我国医疗废物管理存在的法律问题，包括立法问题、执法问题和法律制度问题。第四部分针对我国医疗废物管理存在的法律问题提出了相应的建议。建议要提高立法层次、完善立法内容、加强执法力度、实行生产者负责分类回收的法律制度、集中处置法律制度、惩罚性赔偿制度、经营许可证制度、环境责任保险制度和风险基金制度。

Analysed the deficiency in the asphalt concrete mixer control system at present, this article introduces the development situation on it.

本文对沥青混凝土搅拌站的发展及目前存在的问题进行了分析，着重介绍了智能沥青混凝土搅拌站的控制系统。

With showing the design and constant integration of multimedia technology, form and means of the exhibition become rich and varied day by day, the exhibition industry is weeding out the old and bringing forth the new constantly, has already differentiated the material object exhibition and fictitious exhibition out at present, most exhibitions use many kinds of multimedia technology such as falling-rising tone, light, electricity, demonstrate the stereoscopic, plural, interdynamic situation.

随着展示设计和多媒体技术的不断融合，展览的形式和手段也日益变得丰富多样起来，展览业不断推陈出新，目前就已经分化出实物展和虚拟展，大部分展览都用上了声、光、电等多种多媒体技术，呈现出立体的、多元的、互动的态势。

Industry of software of two countries development is basic contemporaneity starts, but the current situation that at present they develop has certain difference however.

两国发展软件产业基本是同一时期起步的，但目前它们发展的现状却有一定的差距。

According to our country's present legislation situation,the 1993 law against inappropriate means of competition is in a position to protect the business secret,and the crim...

由于我国的刑事立法对商业秘密的保护仅仅是初具框架，大量具体问题依然存在，尚待进一步完善。本文拟就此问题作进行探讨和分析。

At first, the research purpose and significance of progress management of road construction are analyzed and the present research situation about progress management is introduced. Under the guiding of various theories of progress management, the paper use critical path method to develop Hasui highway construction projects plan.

首先分析了公路建设进度管理研究的目的和意义和国内外建设项目进度管理的研究现状，在建设项目进度管理理论的指导下，运用基于网络技术的关键路径法制定了哈绥公路建设项目的进度计划。

At first, the thesis tells us present development condition of automobile CAD at domestic and international situation and its aim and denotation.

本文首先介绍了国内外汽车计算机辅助设计的发展状况，撰写本文的目的和意义。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。