查询词典 X-ray diffraction

In the resin carbon materials treated at 620 ℃ the (100) crystal plane diffraction peek appeared evidently, at the same time the (110) and (006) crystal plane diffraction peeks also appeared. It means that the furfuralcohol resin is a type of facility graphitisable material.

还原性气氛中，经620 ℃炭化处理的样品出现了明显尖锐的(100)晶面特征衍射峰，同时还发现了(110)和(006)晶面特征衍射峰，表明糠醇树脂是一种较易石墨化的树脂材料。

The patterns of Reflection high energy electron diffraction from the epitaxial growth of Si-Ge crystal are interpreted basing on the kinetical diffraction theory of crystal.

在晶体衍射理论基础上，利用运动学理论解释了反射式高能电子衍射（reflection high energy electron diffraction， RHEED）在Si-Ge晶体外延生长过程中不同阶段出现的花样。

Intensity correlated imaging,which can realize the lensless Fourier-transform,the diffraction tomography and the two-step phase-retrieval algorithm are combined together to realize intensity correlated three dimensional diffraction tomography by using 650 nm pseudo-thermal light.

利用强度关联成像技术可实现无透镜傅里叶变换的特点，并结合衍射层析技术和二步相位恢复算法，使用波长为650 nm的赝热光实现了强度关联三维衍射层析。

Based on the theorems of holography and linear system,the numerical reconstructing methods of the off-axis lensless Fourier transform hologram by Fresnel diffraction formula and by the convolution method based on Rayleigh-Sommerfeld diffraction integral and by angular spectrum theorem are studied.

根据全息理论和线性系统理论，采用离轴无透镜傅里叶变换全息记录光路，对利用菲涅耳近似法、基于瑞利—索末菲衍射积分的卷积法以及角谱理论方法数值重建全息图进行了比较研究，并做了计算机模拟验证。

According to mixture of colors theory,the white diffraction can be regarded as noncoherent superposition of the three primary colors diffraction.

根据配色原理，将白光衍射分解为三基色衍射场的非相干叠加，用Matlab模拟白光圆孔和单缝衍射场的分布图，给出程序代码，结果形象直观。

The research work is mainly focused on the phase mask method, the characteristics of near-field diffraction of the phase mask are analyzed with scalar diffraction theory, and the properties of grating formation are studied specifically when the writting light beam incidents normally and slantly, respectively, with some important conclusions derived.

我们首先采用按理想波导模展开的方法建立了FBG中的模式耦合方程，并用模式耦合理论研究了FBG中的模式耦合现象，导出了FBG的反射光谱和透射光谱的理论表达式，采用数值模拟计算的方法研究了FBG的结构参数对其反射光谱特性的影响，得出了若干重要结论。

The results are verified from deep to extremely shallow water conditions. The shoaling waves, standing waves, 3D disturbance waves, tidal waves and solitude waves are simulated and verified,and waves over an underwater bar,the diffraction near single breakwater, breakwater gap, offshore breakwater, Breakhoff experiment are taken into account in this model. Furthermore, the wave harbor resonance under special topography, and "Bragg" resonance are simulated. The wave refraction problem under current fields,the nonlinear wave refraction-diffraction under "Arthur" current field, and the wave propagation under slowly varying current field are studied. The favorable calibrations show the model's feasibility in dealing with the wave nonlinearity and simulation in both deep and shallow water.

论文对深水至极浅水非线性波进行了较全面的验证，计算模拟了波浪浅化、立波、三维干涉波、潮波、孤立波以及波浪越过潜堤、单突堤绕射、双突堤绕射、岛式堤、Berkhoff实验和多连通水域波浪传播等问题，还对特殊地形条件下波浪发生港湾共振、布拉格共振进行了仿真；论文研究了水流中波浪传播折射变形问题，Arthur流场上非线性折射-绕射、水位缓变的转向潮流中波浪传播等缓变水流中波浪问题，各类问题的较好解决验证和表明了本文模式与方法具有适用于深浅水的可计算性与非线性。

Diffraction by helices It may be shownthat the intensity distribution in the diffraction pattern of a series of points equally spaced along a helix is given by the squares of Bessel functions.

衍射螺旋这可能是显示的强度分布的衍射图样的一系列点同样距离的沿螺旋给予的平方贝塞尔函数。

The paper studies the calculaton of wave force on large scale cylinder. Using the linear wave diffraction theory to compute wave force on the large scale cylinder, the paper presents a Nystrm method to solve the problem of the linear wave diffraction.

主要考虑大尺度墩柱上的波浪力的计算，应用线性水波绕射理论来计算作用在大尺度墩柱上的波浪力。

In this study, the traditional angular spectrum method of diffraction simulation is improved. By introducing band-with limitation, a new method is put forward, which is suitable for diffraction simulation both in far and near field.

本文对传统的角谱法衍射计算做出改进，通过引入带宽限制给出一种新的衍射计算方法，能同时兼顾近场和远场的衍射分布计算。

He has to relate with three women in the movie, and yet remain implicitly faithful to the unseen Lucinda.

让克劳德布里亚里成功地饰演试验了一个难度很大的角色：和三个女人打交道，但还要底下对观众未曾谋面的卢馨达保持忠诚。

The experiment was conducted to study effects of inulin on the growth performance, indices of immune organs and serum immunoglobulin of laying chicklings as well as the performance of inulin which replaced the antibiotics in diets by adding 0.2%, 0.4% and 0.8% of inulin, respectively.

试验旨在通过在蛋用雏鸡日粮中添加0.2%、0.4%和0.8%的菊粉，研究菊粉对蛋雏鸡生长性能、免疫器官指数和血清免疫球蛋白的影响，以及菊粉替代抗生素对蛋雏鸡的应用效果。