短波

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激光短波长和长脉宽的特点，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。

The study indicates that the center wavelength of FBG's reflected spectrum on the two polarization directions shift, and the reflectivity decreased with the increase of the twist angle. The longer wavelength produces"red shift". The shorter wavelength produces"blue shift". And the wavelength shift is basically same.

研究表明，随着扭转角度的增加，两个偏振方向的光栅反射谱中心波长发生移动且反射率降低，长波长的产生"红移"，短波长的产生"蓝移"，移动的波长量基本相同。

This paper brought forward the method of quick scanning self_synchronization being adapted for the short_wave hopping communication based on the method of waiting and searching self_synchronization,and worked out the principle architrave of the system to realize it .

在研究了等待搜索式自同步方法的基础上，提出了适用于短波跳频通信的快速扫描式自同步方法，设计了实现该同步方法的系统原理框图。

This paper brought forward the method of quick scann ing self_synchronization being adapted for the short_wave hopping communication based on the method of waiting and searching self_synchronization,and worked ou t the principle architrave of the system to realize it .

在研究了等待搜索式自同步方法的基础上，提出了适用于短波跳频通信的快速扫描式自同步方法，设计了实现该同步方法的系统原理框图。

But this kind of open emission and reception system in High frequency communication has to face two challenges: firstly, natural interference from atmospherics and industry; secondly, tracing, blocking and multipath interference from enemy.

但这种开放式的发射和接收电磁波的通信，特别是在短波通信领域，不仅易遭到天电、工业等自然干扰，而且还要遇到敌方人为的跟踪、阻塞干扰以及多径等各种干扰。

The core of the system is the HF automatic link establishment, for short, ALE.

而这一系统的核心就是短波自动链路建立系统，简称ALE系统。

Auxochromes: An auxochrome is a group which does not absorb significantly in the region 200-800nm, but which affect the spectrum of the chromophore to which it is attached. Examples of auxochromes are

C。 助色团：一些原子和原子团不吸收200-800nm范围内的光，但与生色团结合后，具有能使生色团的吸收峰向长波或短波方向移动的作用，这样的原子或原子团称为助色团。

They have a bell-like life cycle,with a long wave accompanied by a series of short waves.

其生命周期曲线呈钟形且是一条长波伴随着一系列短波。

The necessity of distingshing the longwave and shortwave sensitivity of this apparatus is discussed at first, and then the standard equipment of the improved black body radiation is introduced.

讨论了区分净全辐射表长波和短波灵敏度的必要性，介绍了改进后的检定净全辐射表长波灵敏度的辐射黑体标准装置。

Although the sound quality of broadcast from the Internal is far from perfect, it excels that of short wave.

虽然互联网广播的音色质量还远非完善，但它却胜于短波。

The big eared hedgehog, the little owl, the sand gecko, the three-toed jerboa, and every show needs a villain - saw-scale - the viper!

大耳刺猬，小猫头鹰，沙壁虎，三趾跳鼠，每场戏都需要反派角色：蝰蛇。

Plasmodiophora brassicae ; resting spores ; density gradient centrifugation of sucrose ; ultrasonic disruption

根肿；休眠孢子；蔗糖密度梯度离心；超声波破碎