查询词典 diffraction

With increasing He irradiation flux, the grain size of Ti film decreases and the lattice spacing and width of the X-ray diffraction peak increase due to the He introduction, and the film tends to amorphous phase.

随He引入量的增加，Ti膜的晶粒尺寸减小，He引起的晶体点阵参数和X射线衍射峰宽度增大，晶体的无序程度增加。

The distribution of microhardness is not uniform across the anodic film for the most specimens and the general trend is that the value of the hardness is higher both in the outer film adjacent to the surface and in the inner film near the interface between film and substrate for the specimens with type Ⅱ and type Ⅲ anodizing technology. The measured modulus for anodic film with type Ⅲ anodized is 80.77Gpa. The thermal expansion coefficients of anodic films are measured by two different methods based on X-ray diffraction technique. One way is to detect the lattice spacing change of crystalline phase in powder specimen of anodic film as the increment of temperature by powders of anodic film; and the other way is to determine the thermal stress by entire specimen, that is, the anodic film and the substrate attached together.

利用X射线衍射的方法采用两种不同手段对氧化膜的热膨胀系数进行测试，一种方法为采用氧化膜粉末样品，测量温度变化过程中晶面面间距的改变，进而推出其热膨胀系数；另一种方法为整体试样测试氧化膜中的热应力，通过热应力和热膨胀系数之间的关系计算氧化膜的热膨胀系数。

The products consisted of yellow lead chromate phase and red chromate molybadate solid solution phase . The synthesis condition has a great influence on the ratio of the yellow phase and the red solid solution phase. The index for x-ray diffraction pattern of red so...

指标化结果表明：红色相钼铬酸铅固溶体属单斜晶系，空间群C_2/c，a；7.250(8A，b：12.444(7)A，c：5.119(5)人，夕=132.58(6)°，化学式PbCr_(0.88Mo_(0.12)O_4每个单胞由四个分子组成所得粉末衍射的数据可以代替JCPDS19—685号卡片，可以用定量PbCrO_4相含量的方法来表征颜料的质量。

The composites were tested by X-Ray Diffraction, Scanning Electron Microscopy, Thermal Expansion Coefficient and flexural strength. In these ways, the synthesization of leucite crystal and the preparation of Zro2-KAlSi2O6 Ceramic powder are systemically investigated.

本研究以钾长石、纳米氧化锆和碳酸钾为原料，采用固相反应合成氧化锆-白榴石基烤瓷粉，借助XRD、SEM、TEC和弯曲强度等分析测试方法，对白榴石晶体的合成及氧化锆-白榴石基烤瓷粉的制备进行了较为系统的研究。

Furthermore, Fourier-type periodic DOE is one of the most important kinds of DOEs. Therefore, based on scalar diffraction theory, this project will study the efficiency limit of static and dynamic Fourier-type periodic DOEs.

又傅氏周期性绕射光学元件为最重要的绕射光学元件种类之一，故本计画将依据纯量绕射理论，深入研究傅氏周期性绕射光学元件的绕射效率上限。

A FDTD program was written and the electromagnetic fields for various polarized incident beams are calculated and the polarization states of the diffractive waves are extracted. The relation between the polarization state of the diffraction wave and the grating balzed angle and polarization angle for the linearly polarized incident wave is analyzed; In the spectral range of 1530 ~ 1570nm, the polarization dispersion is studied for the linearly and circularly polarized incident beam.

用时域有限差分程序计算出任意偏振方向线偏光经过闪耀光栅衍射后的电磁场分布，提取衍射波的S偏振和P偏振分量，分析它们与光栅闪耀角和入射光波偏振角的关系；分析在1530 -1570nm光谱范围内，入射光波为线偏振波和园偏振波时，衍射光波的偏振色散特性与光栅闪耀角的关系。

At present, we have gained the smallest linewidth of 293nm, which break the limit of diffraction limit.

实验中产生的最小线宽为293nm，突破了衍射极限的限制。

When Lloyd's mirror interference is combined with grating diffraction the fringes for different colors produced by white light source can be coincident, thus the white and black fringes will be observed.

把劳埃镜干涉和光栅衍射结合起来，有可能使白光源产生的不同颜色的条纹彼此重合，从而能观察到清晰的黑白条纹。

Using of optical microscopy, X-ray diffraction, transmission electron microscopy, hardness and tensile testing, the effect of thermal exposure at high temperatures on the microstructures and of high-temperature tensile properties of rapidly solidified AlCrYZr have been studied. The results show that there are two main phases,Al20Cr2Y(cubic, a=1.437 nm) and DO23Al3Zr(terganal, a=0.4 013 nm , c= 1.732 nm), in the as-solidified alloy. The Al20Cr2Y phase can maintain its cubic structure at 500℃, but the particles coarsen remarkably and even become lumpish. In coarse lumpish Al20Cr2Y phase the plane faults and twin structures exist.

摘 要：采用金相、 X射线衍射、透射电镜、硬度测定和拉伸试验研究了高温热暴露对快速凝固AlCrYZr合金显微组织影响和高温下力学性能的热稳定性，结果表明，快速凝固AlCrYZr合金主要第二相为Al20Cr2Y(立方，a=1.437nm)和DO23Al3Zr(正方，a=0.401 3nm， c=1.732nm)，Al20Cr2Y在500℃热暴露尚能保持其立方结构，但质点明显粗化，甚至块状化，在粗大的Al20Cr2Y相中存在有层错和孪晶结构。

The relationship between diffraction and external static magnetic field strength is non-monotonic.

其静态衍射与外磁场强度呈非单调的关系；其动态衍射的特征时间与外磁场的强度成反比，与磁性液体的浓度成正比。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。