光谱的

X-ray spectra in an absolute intensity scale is obtained from Al laser-produced plasmas created by laser energy of 6.78 J.

展示了Al等离子体的类氦辐射谱线，其光谱分辨率大于1500。

The refractive index and absorption coefficient of an explosive sample were measured by terahertz time-domain spectroscopy.

利用太赫兹时域光谱技术给出了这些炸药样品在0.2THz～2.5THz范围内的折射率和吸收系数。

A novel Er3+-doped tellurite glass with compositions of TeO2-ZnO-Na2O-Bi2O3 was prepared, and the intensity parameters, spontaneous emission probability, absorption and emission cross-section of Er3+ ions were calculated according to the Judd-Ofelt and McCumber theory.

研制了一种新型掺铒碲酸盐玻璃TeO2-ZnO-Na2O-Bi2O3，利用Judd-Ofelt和McCumber理论计算了Er3+离子的强度参数、自发辐射几率、吸收截面和发射截面等光谱参数。

Its UV-vis spectrum exhibits two absorption maxima at 340 and 638 nm.

它的紫外可见光谱在340和638 nm处呈现两个吸收峰。

In the second part, that the spectrum absorption characteristic of opharyngeal carcinoma measuredPAS technique is discussed.

第二部分论述用光声技术测量人鼻咽癌的光谱吸收特性。

Two compounds were isolated from ethyl acetate extract of the fermentation of fungus 07-11,which obtained from the soil of Yunnan Province. They were identified as N-(4-hydroxy-2-methoxyphenyl)acetamide (1) and ergosta-7,22-diene-3,6-dione (2) respectively on the basis of spectral analyses and physical and chemical identifications.

从云南土壤真菌07-11号菌株的发酵液乙酸乙酯萃取物中分离得到2个化合物，通过理化鉴别和光谱测定，鉴定两化合物分别为N-(4-羟基-2-甲氧苯基)乙酰胺(1)和麦角甾7，22-二烯-3，6-二酮(2)。

This paper reports on a rapid method for the determination of ethyl acetate based on UV spectroscopy.

提出了一种基于紫外-可见光谱法快速测定乙酸乙酯的方法。

In this paper,attenuated total reflectance infrared spectroscopy is used to study the interaction of acetone and water molecules.

采用衰减全反射-傅里叶红外光谱法研究了丙酮和水分子间的相互作用。

In this work, the problems of spectrum, quantum yield and lifetime of Phosphoresconce, photosensitization and photostabilization of polymeric acetophenone and its derivatives have been studied.

本工作合成和研究了高分子苯乙酮及其衍生物的光谱、磷光量子产率、磷光寿命以及光敏化、光稳定等问题。

In this dissertation, we optimized the thinkness of each layer of TFEL devices using the layered optimization method to obtain ZnS: Ce〓 TFEL devices. Accoding to the energy level structure of Ce〓, two criteria for distinguishing the EL of Ce〓 were found out, from which it was conduded that the TFEL of ZnS: Ce〓 comes from 5d→4f transition of Ce〓. The measurement of brightness waveform showed that the TFEL of ZnS: Ce〓 was the luminescence from independent centers. and there were the field induced-delocalization in this process anf it〓s the cause of low TFEL efficiency of ZnS: Ce〓. In this dissertation, different influence factors on TFEL of ZnS: Ce〓 were sdudied. The influence of different host lattice is different: The blue/green ratio of ZnS: Ce〓 in hexagonal system of ZnS is larger than that in cubic system of ZnS, and the TFEL peaks in hexagonal system of ZnS moves toward longer wavelength compared with that in cubic system of ZnS. The adding buffer layer was used in this stage. The solubility of Ce〓 in ZnS was small and it was another limit to TFEL brightness of ZnS: Ce〓 device. The solubility of Ce〓 increased ten times when using Li ions as flux, so that the TFEL brightness of ZnS: Ce〓 was enhanced. It was found that the appearing of ZnO in active layer improves the TFEL of ZnS: Ce〓: the brightness and the wave range of ZnS: Ce〓TFEL were enhanced.

本文采用TFEL的分层优化方案，优化组合了各膜层厚度，选择最佳制备条件，得到了ZnS：Ce〓的TFEL；根据Ce〓的能级结构，找到了判别Ce〓的EL的两个简单依据，并据此断定ZnS：Ce〓的TFEL的两个发射峰分别属于Ce〓的〓和〓跃迁；亮度波形测量表明ZnS：Ce〓的TFEL属于分立中心发光，分析认为在此过程中存在着较严重的场致离化，这也是ZnS：Ce〓的TFEL效率较低的一个原因；本文考查了影响ZnS：Ce〓的TFEL的各种因素，发现：基质的晶体结构对ZnS：Ce〓的TFEL有所影响，在六角相ZnS中Ce〓的TFEL优于立方相ZnS中Ce〓的TFEL：发射峰的蓝-绿比相对较大，且光谱向短波方向移动，在此项研究中本文采用了在发光层前增镀过渡层的办法，过渡层为六角晶相的ZnO；限制ZnS：Ce〓的TFEL器件亮度的一个原因是Ce〓在ZnS中的溶解度低，本文用Li离子作助溶剂增大了Ce〓的溶解度，增大幅度为一个量级，并且ZnS：Ce〓的TFEL亮度明显提高；从ZnS：Ce〓的TFEL光谱来看ZnS：Ce〓的TFEL波长覆盖范围较小，亮度也不高，达不到做为白色TFEL材料的要求，需要寻找新的白色TFEL材料；在研究ZnS：Ce〓的TFEL中还发现：发光层中ZnO的出现有利于ZnS：Ce〓的TFEL：发射峰变宽、亮度增大。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。