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In the first section of the thesis, Er: YAG lasers of different mode and pulse width were used to ablate rabbit's corneas.

本研究的第一部分采用不同宽和模式的Er:YAG激光消融兔眼角膜组织。

Lasers characteristic as a shock wave drive and the advantages of KrF laser are explained. Finally, the progress at home and abroad is enumerated.In chapter two, the basic principle of the EOS study is introduced. Specially, the impedance mismatch effect of the double-layer flyer is mentioned here. It is the primary theoretical basis of this paper.In chapter three, a one-dimension, three-temperature hydrodynamic code HYADES is introduced briefly. it is used to make a qualitative analysis about how the thickness of ablator affect the flyer velocities and stability.In chapter four, the experimental setup is described.

第一章为绪论部分,简要总结了状态方程研究的历史,激光作为冲击波驱动源的特点和KrF激光的优势,以及国内外的进展情况;第二章是本工作的理论基础,讨论了冲击波物理和雨贡纽曲线测量的基本原理和方法,重点介绍了激光飞片法的特点、关键要素和双层飞片的阻抗失配效应,鉴于KrF激光短波长和长宽的特点,我们拟对双层飞片的特性展丌研究工作,为实测状态方程做好准备;第三章简单介绍了一维三温流体力学数值模拟程序Hyades并运用它进行了若干状态方程实验的计算和设计,进行了烧蚀层厚度对飞片速度、稳定性的影响的定性分析;第四章是实验平台描述部分,介绍了光束平滑化技术,靶的制作,条纹相机的原理和使用,系统同步控制以及光学记录速度干涉仪系统的简单原理和构成。

Laser's characteristic as a shock wave drive and the advantages of KrF laser are explained. Finally, the progress at home and abroad is enumerated.In chapter two, the basic principle of the EOS study is introduced. Specially, the impedance mismatch effect of the double-layer flyer is mentioned here. It is the primary theoretical basis of this paper.In chapter three, a one-dimension, three-temperature hydrodynamic code HYADES is introduced briefly. it is used to make a qualitative analysis about how the thickness of ablator affect the flyer velocities and stability.In chapter four, the experimental setup is described.

第一章为绪论部分,简要总结了状态方程研究的历史,激光作为冲击波驱动源的特点和KrF激光的优势,以及国内外的进展情况;第二章是本工作的理论基础,讨论了冲击波物理和雨贡纽曲线测量的基本原理和方法,重点介绍了激光飞片法的特点、关键要素和双层飞片的阻抗失配效应,鉴于KrF激光短波长和长宽的特点,我们拟对双层飞片的特性展丌研究工作,为实测状态方程做好准备;第三章简单介绍了一维三温流体力学数值模拟程序Hyades并运用它进行了若干状态方程实验的计算和设计,进行了烧蚀层厚度对飞片速度、稳定性的影响的定性分析;第四章是实验平台描述部分,介绍了光束平滑化技术,靶的制作,条纹相机的原理和使用,系统同步控制以及光学记录速度干涉仪系统的简单原理和构成。

And it is suggested that this is a good tool in identification of the flow regimes and not easily influenced by the absolute pressure value.

实验表明,采用动能作为特征值不易受压力绝对值的影响,在微管道中气液两相流流型的识别过程中取得了比较好的结果。

This paper introduces the control principle of the direct torque control system of an asynchronous motor, and proposes a new strategy to solve the problem of the large torque ripple and current ripple. The Matlab 6.5 simulation shows that it can solve the problem efficiently.

本文介绍了直接转矩控制系统的控制原理,并针对基于直接转矩控制的异步电动机运行时存在较大的电流及转矩动问题,提出一种新的控制方案,并基于Matlab 6.5对这种新方法进行仿真,仿真结果表明该方案能有效的解决电流及转矩动的问题。

Shagou vein-type Ag-Pb-Zn ore deposit in the south margin of North China Craton is composed of vein and replacement ore types.

豫西沙沟薄状Ag-Pb-Zn硫化物矿床位于华北地台南缘熊耳山地区,由硫化物石英和石英-碳酸盐-云母蚀变岩这两种矿化类型组成。

Meconoquintupline is a new alkaloid, the molecular structure of which has been determined, and may be extracted from Meconopis quintuplinervia Regel, a traditional Tibetan medicine.

绿绒蒿碱是一种从藏药五绿绒蒿中提取并已确认结构的新的生物碱。

The methodology of forcefeed was used to investigate peptides releasing law in gastrointestinal tract and their intact absorption in portal blood in chickens. Peptides releasing characteristics from protein feeds of different qualities in jejunum and their effects on portal peptides were also studied.

采用强饲蛋白饲料后不同时间点采集鸡门血液和胃肠道各段食糜的方法研究了鸡胃肠道中肽类的释放规律及其完整入血的程度,比较了不同品质蛋白饲料在鸡空肠中的肽类释放特点及其对门血浆肽量的影响。

However, during geomagnetically disturbed days the occurence of Pi pulsations in both areas increases and they have a good corresponding relation, but those in Antarctica are stronger than that in Beijing.

但在磁扰日中 Pi型动出现次数明显增加,还会出现在对应的小时段上。不过长城站的 Pi动往往比北京地区强些。

Combined with the traditional radar jamming, this article analyzes the smart noise jamming and cites four smart noise jamming patterns: coherent in-pulse suppressing jamming, intensive false targets with frequency-shift, front edge replication jamming and equal-partition pulse sampling jamming.

本文结合传统的雷达干扰方法,分析了当前热门的灵巧噪声干扰,选取了四种灵巧噪声干扰样式:相参内压制干扰、基于移频的密集假目标干扰、前沿复制干扰、内等间隔取样干扰。

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