光反射

This paper focuses on the effects of machining tolerance on monostatic RCS of triangular trihedral corner reflector s by using Physical Optics method.

基于物理光学法研究了三角形三面角反射器加工公差对其单站雷达散射截面的影响。

Light engine scanning is in the way of spurring reflects to circle with the machine unit. The rule is easy, sweep range greatly, yet the problem is that the machine system is the bad accuracy and the stability is harder domination and so on.

光机扫描是用机械装置驱动反射系统旋转以实现激光光束的扫描，其原理简单，扫描范围大，但机械系统存在机构精度差、稳定性较难控制等不足。

But using infrared CCD, which has little scattering light, strong penetration ability, can improve image quality greatly. This paper analyzes the effects on surveillance by Rayleigh scattering, Mie scattering and unselective scattering theoretically. In addition it discusses the relation between transmission coefficient, reflection coefficient and wavelength of infrared CCD.

而采用散射光小，穿透能力强的红外CCD，则可以显著改善图象质量，从理论上分析了Rayleigh散射，Mie散射，无选择散射对监测的影响，讨论了红外波段CCD的反射系数、透射系数与波长的关系。

The results showed that the TiN andN films are polycrystalline phase. The properties and structure of TiN films are mainly determined by the N2 mass flow rate, and as the N2 mass flow rate increases, the structure of the TiN films transforms to f.c.c. type leading to better the properties of films. The presence of negative bias voltage can optimize the grain of TiN films, lower the defect proportion and denser the films, which improves the hardness of films. The TiN films conform to the free carrier absorption mechanism and there are many of free electrons with lower N content in TiN films. With the increase of N content, the quantity of free electrons and reflectivity of films decrease, and the plasma frequence shifts to the lower energy, which leads to the regular change of colors of films from silver, yellowy, golden to yellow-red, meanwhile the lightness of films decreases. The goldenN film consists of TiN and ZrN phase, but belongs to a sigle f.c.c. structure with (111) preferred orientation. The Zr-doping dosen't change the position of the valance band, conduction band and forbidden band ofN film, but leads to the presence of new energy levels, which is the reason thatN film remains golden. The transparent hard films with good corrosion resistance and high hardness have been prepared and the further reseachs showed that the grain size of those films is by far smaller than the wave length and the width of forbidden band of those films is very broad, is the reasons that those films are transparent.

研究表明：氮化钛和N 薄膜为多晶态，氮流量决定了氮化钛薄膜的结构和性能，增加氮流量能使氮化钛薄膜的结构向面心立方结构转变，从而得到性能良好的氮化钛薄膜；施加负偏压能优化氮化钛晶粒和减少薄膜中的缺陷，使膜层变得更致密，从而提高薄膜硬度；氮化钛主要遵循自由载流子光吸收，氮含量较少时薄膜中的自由电子数目较多，随着氮含量的增加，薄膜中的自由电子数目不断减少，反射率逐渐降低，等离子体频率向低能端移动，从而使薄膜颜色出现规律变化，由金属色银白色到淡黄、金黄再到红黄，并且薄膜亮度呈下降趋势；金黄色的N 薄膜中存在TiN 和ZrN 的分离相，但其为单一的面心立方结构并具有(111)面择优取向；相对于TiN 薄膜，Zr 掺杂后，并没有使薄膜的导带、价带和禁带发生变化，只是在TiN 禁带内增加了新能级，这也正是掺杂Zr 后，薄膜仍

Using Fe2(SO4)3 and Ti(SO4)2 as raw materials, Nano- Fe2O3-TiO2 photocatalyst was prepared by an ethyl-assisted hydrothermal method at low temperature to degrade auramine in the three-phase photocatalytic reactor.

以Fe2(SO4)3和Ti(SO4)2为原料，采用乙醇助水热法，在较低的温度下制备了Fe2O3-TiO2复合光催化剂，并用X射线衍射、紫外可见漫反射光谱对其进行了表征。

The reflection of VHF signals can also occur during aurorae - spectacular curtains of lights arising from charged particles originating from the sun.

VHF 信号的反射可能并且发生在aurorae -光壮观的帷幕期间出现从荷电粒子起源于太阳。

The asymmetric distributions of the surface optical second harmonic generation through azimuthally angular scans for thin silver films deposited on Si(111) wafers have been detected with different polarizations of output beams.

实验发现成长於Si(111)基板的银薄膜，以入射基频光、反射二次谐波的不同偏振组合观察到有不对称的方位角二次谐波强度分布之情形。

Because of its unique structure, Nano-particle shows its small dimension effect, quantum effect, area effect, macroscopic quantum tunnel effect, it displays special function in optics, electrics, calorifics, magnetics, absorption, reflection, adsorption, Catalyzing and alkaloid etc.

纳米微粒因其独特的结构状态，产生出小尺寸效应、量子尺寸效应、面积效应、宏观量子隧道效应等，从而使纳米材料显现光、电、热、磁、吸收、反射、吸附、催化以及生物活性等特殊功能。

Integrated analysis of optical and mechanics in larger aperture catadioptric optical system ［J］.

大口径折反射式光学系统的光机结合分析［J］。

Integrated analysis of optics and mechanics in larger aperture catadioptric optical system［J］.

大口径折反射式光学系统的光机结合分析［J］。

I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像，后来回台湾，甚至去年在北京，居然也四处看见她的海报，才惊讶她的魅力之大。