反射平面

To reduce the marking distortion , using the vertical 2 - dimension galvanometer distributing and f field lens focalize , the distance of the second galvanometer to the machining plane is the focus f . to avoid too hign temperature to distroy the resonance cavity because of too long marking time , cooling system and self - protector is used in the design

为减少打标畸变，采用垂直二维振镜分布， f物镜聚焦，将激光束经第二个振镜反射后到加工平面的距离为焦距f ，为了避免打标时间过长，温度过高破坏谐振腔，在设计中加上冷却系统和自我保护装置。

By adopting an intracaity flat surface with low reflectivity and controlling the ratio of subcavity lengths, the repetition rate of this compact femtosecond Cr:forsterite laser can be multiplied from 100 MHz to 500 MHz in femtosecond regime. Repetition rate higher than 1GHz can also be achieved.

接著我们置入一个低反射率的腔内平面，将共振腔分为两个次腔，透过次腔长度比例的控制，我们可以将飞秒脉冲的重覆率从100百万赫兹倍增到500百万赫兹，甚至到更高的十亿赫兹以上。

A photonic crystal-air interface or line defect is utilized as a holophote or a partial reflective mirror to design a paralleled plane cavity, a single ring cavity structure and a multi-ring cavity structure. The method has simple design idea, good integration and wide application; by adopting the method, the self aligning photonic crystal lasers with different wave bands can be designed according to the luminescent characteristics of different materials; particularly, the utilization of semiconductor materials to design a light source of optical communication wave bands has more important practical value.

利用光子晶体-空气界面或线缺陷作为全反射或部分反射镜设计平行平面腔、单环形和多环形腔结构；该方法设计思路简单，集成性好，适用范围广，可根据不同材料的发光特性设计不同波段的自准直光子晶体激光器，特别是用半导体材料设计光通讯波段的光源器件具有更重要的实用价值。

In this paper,based on phased array transducer,we excite one element of array and incept reflection by the others.Then we study the change rule of wave reflection groups of camber and plane.

模拟相控阵阵列探头，利用单个晶片依次激发、所有晶片接收的方法，研究平面和弧面反射波组的变化规律。

Spinal cord injury is defined as disfunction of spinal cord which includes disfunction of motion,senseness,sphincter and reflection below injury face as the result of directed and indirected violence on normal spinal and spinal cord.

脊髓损伤指因直接暴力或间接暴力作用在正常脊柱和脊髓组织，致损伤平面以下脊髓各项功能包括运动、感觉、括约肌和反射功能障碍的疾病。

So its dynamic response model would be a scattering model rather than a direct transmission model. It is obviously reasonable that the interbedded reflecting waves should be considered.

为此，提出一种考虑夹层内一次反射波的动力响应模型，并以平面P波为例，给出了一个薄弹性软弱夹层的动力响应模型，分析其动力响应的一般特征。

With two autocollimations and a big flat mirror, the precision of the parallelization tester can be better evaluated.

利用两个精度为0.1的自准直平行光管和一块平面反射镜检测平行度测试仪精度。

This paper simply says the operation、 principle and designing schema of Analogue System Of Moving Target; Emphatically discuss the design schema of Light Attenuator of imitating energy and Closed servo-control of realizing the mirror reflector to turn to move in space, and make the sciential analysis about the definition of the main function parameter value.

论文阐述了动目标模拟系统的工作、原理及设计方案；着重讨论了用于模拟目标能量的光衰减器和实现平面反射镜二维转动的闭环伺服系统的设计方案，并对其主要性能参数的确定做了技术探讨。

We then add boundaries delineated forward/backward facing reflected shock, Mechanical equilibrium, M2=1 and reflected shock strong/weak separating conditions on the (M0,q1) map of shih(2004). This is followed by systematically investigating multiply possible three shock theoretical solutions of steady Mach reflections in perfect triatomic gases. Pressure-deflection shock polar solutions are used to help illustrate different solution behaviors of these theoretical three-shock solutions. M0 is flow Mach no. upstream of incident shock, M1 is flow Mach no. downstream of incident shock, M2 is flow Mach no. downstream of reflected shock,q1 is flow deflection downstream of incident shock.

随后本文由石(2004)论文中加入前后分界、机械平衡、M2=1及强弱分界条件，然后有系统地探讨三原子分子理想气体(r=1.2857 )稳态马赫反射参震波理论多重解之交点及其对应之压力-转折角震波极图解，并建构出此三原子分子理想气体稳态马赫反射流场三震波十阶多项式理论解於(Mo，q1)平面上之解域图，其中M0为入射震波上游流场马赫数，M1为入射震波下游流场马赫数，M2为入射震波下游流场马赫数，q1为入射震波下游流场转折角。

A surface capable of reflecting sufficient undiffused light to form a virtual image of an object placed in front of it.

镜能够反射足够的非散射''。'性'。''光从而能形成放置于其前的物体的真实图像的一个''。'平面'。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了