查询词典 diffraction spectrum

According to the angular spectrum theory, the Fraunhofer diffraction light intensity distribution

根据衍射角谱理论，利用计算机数值计算了由正三角形和正六边形组成的衍射平面的夫琅和费衍射光强分布，分析并比较了两者的衍射光强分布特点，并用实验验证了上述数值计算的正确性。

According to the angular spectrum theory, the Fraunhofer diffraction light intensity distribution of the equilateral triangle and the equilateral hexagon is calculated by computer, the characteristics of their light intensity distribution is analyzed and contrasted, and it is proved by experiments.

根据衍射角谱理论，利用计算机数值计算了由正三角形和正六边形组成的衍射平面的夫琅和费衍射光强分布，分析并比较了两者的衍射光强分布特点，并用实验验证了上述数值计算的正确性。

Theoretical analysis proves that,when the pixel number,pixel size and reconstructed wavelength of the hologram are certain,computer simulated algorithms of Fresnel diffraction integral fall into convolution algorithm,angular spectrum algorithm and direct Fourier trans...

通过对相位函数局域空间频率的分析，给出了判定算法适用范围的特征再现距离，并分析得出，再现距离大于特征再现距离时，适合用卷积法；小于特征再现距离时，适合采用角谱法；等于特征再现距离时三种方法都适用。

Use the technical token polymer such as the analysis that differ heat, infra-red spectrum and X ray diffraction the hot property of tiny ball and structure.

利用差热分析、红外光谱及X射线衍射等技术表征聚合物微球的热性能及结构。

No research was reported on the infra-red spectrum and X-ray powder diffraction of 〓.

所制备的〓的红外吸收峰及X-衍射图谱与文献数据基本一致。

Based on the Rayleigh-Sommerfeld diffraction integral and complex analytical signal representation,the free-space propagation equation and its Fourier spectrum for ultrashort chirped pulsed Gaussian beams are derived,and the far-field analytical electric field and spatial intensity are presented.

基于瑞利-索末菲衍射积分，使用复解析信号法推导出了啁啾脉冲高斯光束在自由空间中的传输方程及其傅里叶谱，给出了远场的光场和空间光强的解析式，研究了啁啾参数C对脉冲光束传输的影响。

Starting from the sampling theorem,the fast Fourier transform computation of angular spectrum diffraction formula and its inverse operation are studied.

从取样定理出发，对角谱衍射公式及逆运算的快速傅里叶变换进行了研究。

The Si/Al ratio of NaY molecular sieve was determined by an empirical formula of lattice constant obtained by extension function method of X-ray diffraction and framework Si/Al ratio of NaY molecular sieve determined by solid nuclear magnetic resonant spectrum method.

前言晶胞参数是决定晶体结构的重要参数之一，Na Y超稳分子筛属立方晶系，由于 Na Y超稳分子筛骨架硅铝比受许多条件的影响，如投料比、晶化温度、晶化压力和晶化时间等。通过研究发现分子筛骨架的硅铝比与其晶胞参数相关，而分子筛的硅铝比可作为合成分子筛产品质量的控制指标 [1] 。

Some samples of TiO_2 nanocomposite material doped with W~(6+) were prepared by Sol-Gel process,The morphology and phase composition of TiO_2 film were studied by scanning electron microcopy,X-ray diffraction and ultraviolet-visual reflection spectrum.

以钛酸丁酯和钨酸钠为原料，采用溶胶-凝胶法在不同基体材料上制备了掺杂W6+的TiO2纳米复合材料。

The temporal change in floes size of fine suspended sediments was measured in Xuliujin of the Changjiang Estuary in June of 2003, by using an in situ laser diffraction particle sizer, the laser in situ scattering and transmissomerty-100(LISST-100). The spectrum analysis was applied to analyze the fluctuation of floes diameter during the spring tide and the neap tide.

2003年6月利用现场激光粒度仪(LISST-100)在不扰动的情况下，获取了长江口徐六泾处悬浮细颗粒泥沙絮凝体的现场粒径系列资料，应用谱分析方法研究了絮凝体粒径在大小潮、表底层的变化规律。

Continuously improve the production mechanism, to provide customers with better quality products and services.

不断的完善生产机制，给客户提供更优质的产品及服务。

B:Yes, he was the very prize-winner in the court tennis ten years ago?

是的，他是十年前的世界网球冠军。