波段

The main ingredient of quartz is Silicon Dioxide,it is a special purpose industrial material.

石英玻璃在紫外到红外的整个光谱波段都有较好的透光性能，可见光透过率在93%以上，特别是在紫外光谱区，最大透过率可达80%以上。5、电绝缘性能好。

Based on the analysis of absorption characteristic of desensitizing dye the free photoelectron decay curves of desensitized silver chloride emulsion exposed by 532nm are measured by microwave absorption and dielectric spectrum detection technology.

在对减感染料的吸收特性进行分析的基础之上，利用微波吸收介电谱检测技术测量了减感后氯化银乳剂在532nm波长曝光下的光电子衰减曲线，通过分析减感染料对光电子强度和衰减的影响，发现在光谱增感波段减感染料通过与增感染料相互竞争的吸(来源：A17B7464C论文网www.abclunwen.com)收光而影响光谱增感乳剂的光电子强度，并且减感染料通过俘获光电子使光谱增感乳剂的光电子的衰减变快。

By employing the diffraction grating coupling technology and the basic theory of surface plasmons,we successfully excited the SPs along Al/air interface,and first observed the extraordinary enhancement and beaming effect of EMW transmission through a single subwavelength metallic slit in X-band microwaves.

利用表面衍射光栅耦合技术和表面等离子体激元的基本理论，成功地在金属铝的表面上耦合激发了表面等离子体激元，首次在微波的X波段发现了电磁波通过亚波长金属狭缝的超强透射和聚束效应。

This paper mainly discusses the analysis and design of a finline single-ended mixer and detector.

本文描述了Ka波段鳍线单端混频器和检波器的分析与设计。

earth atmosphere, GPS/LEO occultation, Abel integral transformation, singular point of integral

GPS卫星在L一波段上发射双频的无线电信号，当它们穿过地球大气，被一

The stealth warplane for the microwave radar usually have complicated structures with the coating of wave absorption. On the base of calculation and modeling of the geometrical structure of the warplane in real size, the HF RCS of the air crafts under two different polarizations in different direction have been calculated with the FDTD. The result shows that the above mentioned stealth warplane have the obvious characterstics of frequency resonance, polarization and the relatively large RCS in HF Band 10-30dBm2, which can be used as the theoretical reference for selection of working frequency for sky wave OTH Radar and it also means that the sky wave OTH radar has good capability of anti-stealth targets quantitatively.

对微波雷达具有隐身作用的飞机，其形体较为复杂且表面涂敷有强吸波材料在对一种具有隐身几何外形结构实际尺寸飞机进行计算建模的基础上，文中采用FDTD技术得到了两种极化状态下该飞机无涂敷时不同方向上的短波雷达截面RCS值其结果显示了这种隐身几何外形飞机在短波波段有明显的频率谐振特性、极化特性和较大的RCS10-30dBm2，可为天波超视距雷达在选择工作频率时提供理论参考，并定量地说明天波超视距雷达具有较优的反隐身目标能力

Explanation: Dusty stellar nursery RCW 49 surrounds young star cluster Westerlund 2 in this remarkable composite skyscape from beyond the visible spectrum of light.

说明：在这张用不可见光波段拍摄的显著合成影像中，模糊恒星孕育场 RCW49包围着年轻星团 Westerlund 2。

The very center of the Sombrero glows across the electromagnetic spectrum, and is thought to house a large black hole.

草帽星系的中心在所有电磁波波段都很明亮，因此一般认为那儿藏著一颗大质量黑洞。

The absorption spectra of the different parts of the crystals from 350 to 2 500 nm were measured.

测定了晶体不同部位在350~2 500 nm波段的吸收光谱。

Shapes of spectral distributioncurve in pure Kuroshio region and coastal waters are obviously different.Some inflectionpoints in spectral distribution curve appear at wavelength bands of 412,443,490,520,550,555 and 670nm.

黑潮域与沿岸水的水中辐射光普曲线之形状呈显著的差异，并使得水中辐射照度分布曲线於412、443、490、520、550、555及670 nm波段处出现了屈折点。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐