光谱分布

As substitute for fluorite lens, a double-layer DOE is used in a long focal-length apochromatic objective lens. The modulation transfer function of this hybrid optical system is suggested for evaluating diffraction efficiency of the multilayer DOE. The results show the diffraction efficiency has a wide and symmetrical distribution in the whole waveband.

利用双层衍射光学元件替代萤石透镜校正混合光学系统的二级光谱，设计并制作了一套长焦距物镜，并利用系统调制传递函数评价了多层衍射光学元件衍射效率，测试结果表明衍射效率在整个设计波段内以较高的数值平均分布。

Moreover for derivatives of benzimidazole, density functional theory method calculations of the structure, atomic charge distributions and electronicspectra have been performed at B3LYP/6-311G*~* level. The results of the calculationshave been compared with experimental data and they are found to support each other,which provide useful information for the further study on derivatives ofbenzimidazole.

并运用密度泛函理论在B3LYP／6-311G~**料水平上，对化合物的优化几何、原子电荷分布及转移、电子光谱以及及在不同温度下的热力学性质进行了计算，从而为苯并咪唑类化合物的进一步研究提供了有价值的参考和理论数据。

The derived equation for describing the transverse intensity distribution gives good approximation to the experimental result as well as the zero-order Bessel function.

模拟得到的光场分布与实验结果及基于菲涅尔衍射积分理论或空间光谱理论得到的零阶贝塞尔光束很接近。

The reflection spectra of Al0.5Ga0.5As-AlAs distributed Bragg reflector at different incident angle are calculated by transfer matrix method.

采用传输矩阵法对Al0.5Ga0.5As-AlAs材料的发光二极管分布布拉格反射器进行入射角的反射光谱研究，计算发现反射偏振光p和s随入射角的增大呈"V"形变化，在49.8 处有最小反射值。

The reflection spectra of Al0.5Ga0.5As-AlAs distributed Bragg reflector at different incident angle are calculated by transfer matrix method. The reflection spectra curve of p-polarized and s-polarized plane waves vary with a 'V' shape with the rise of the incident angle and the lowest reflectivity is at 49.8°.

采用传输矩阵法对Al0.5Ga0.5As-AlAs材料的发光二极管分布布拉格反射器进行入射角的反射光谱研究，计算发现反射偏振光p和s随入射角的增大呈"V"形变化，在49.8°处有最小反射值。

As to our knowledge, this is the first time to investigate systematically the defects of ZnO. The density of states and the charge density shown in this paper facilitates the analysis of experimental results such as Photoemission and absorption spectra or emission spectra.

本文首次对ZnO的本征缺陷做了系统的研究，计算了每种缺陷的态密度曲线和它对电荷密度分布的影响，这些结果对能谱和光谱等实验结果的分析会有很好的借鉴意义。

It is important to know the transverse distribution of THz wave, which can be referenced as an evidence of sample positioning in THz spectroscopy and THz imaging experiments.

研究了焦点位置附近太赫兹波的横模分布，目的在于了解系统中太赫兹波的横向分布情况，为进行太赫兹光谱和成像实验提供依据。

Additionally, we analyzed the thermal-decay rules of LPGs. We use temperature-compensating package to reduce the sensitivity of temperature of LPGs. At the end of this paper, we summarized the key technologies required during practical application of LPGs, During this paper, we obtained some inventional results as follow: 1. We deduced waveguide modes of single and many mode fibers by use of Maxwell equation.

论文工作期间，主要取得了以下几方面的成果：一、我们利用Maxwell方程，推导了单模和多模光纤的导波模式，同时利用耦合模原理，简要推导了反射式光纤光栅的模式场分布及相应的模式特征方程；采用弱导光纤近似理论，严格推导了透射式长周期光纤光栅的模式场分布，得到了光栅周期与光波长间的对应关系，这是分析长周期光纤光栅光谱特性的有力工具。

The infrared radiation characteristics of unsymmetrically two dimensional nozzle are experimentally studied. UTDN is designed and manufactured by prolonging one broad side of a general two-dimensional nozzle AR8 and its aspect radio is 8. Temperature distribution on the axes and spectral IR intensity on the orientation of 0, 10, 30, 60 and 90° on three typical detective planes of the hot plume are measured on hot plume simulation platform of the turbo fan engine.

为了研究非对称二元喷管(Unsymmetrically two-dimensional nozzle， UTDN)的红外辐射特性，首先以宽高比为8的常规二元喷管(AR8)为基础，设计加工了UTDN，然后在涡扇发动机热喷流实验台上测量了UTDN轴线上的温度分布以及在后半球典型探测面内0， 10， 30， 60和90°方向上的红外光谱辐射强度，积分得到辐射强度的空间分布，并在相同的实验条件下，与AR8进行了比较。

The 29 F globular clusters in the galaxy are selected as samples in my paper (The space distribution and motional orbits of the samples have not been researched in detail before.).According to the basic parameters: azimuth coordinates, distances from the sun, radial velocities and proper motions of sample clusters, the initial positions and velocities of the samples are reduced using the galactic coordinates, and their orbits are integrated by numerical method for three different galactic gravitational potential models.

本文选用银河系中29个累积光谱型为F型的球状星团作为样本(这些样本星团的空间分布和运动特征都没有被详细地讨论过)，根据它们的基本资料：方位坐标、日心距、视向速度，绝对自行等参数，归算处理得出了各样本星团的空间分布和运动速度。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。