查询词典 Fresnel diffraction

The remains of silver-plated graphite powders sintered at high temperature were analyzed through X-ray diffraction and the silver content was obtained.

用扫描电镜对镀银石墨粉的微观形貌和镀覆效果进行分析，通过 X 射线衍射仪对镀银石墨粉高温灼烧后的剩余物进行分析测试并计算镀银石墨粉的含银量。

Diffusion mechanism,microstructure and optical properties of Ag/Si multilayerson annealing have been investigated by in situ X-ray diffraction,high-resolutiontransmission electron microscopy and UV-VIS-NIR spectrophotometer,Siliconatoms diffusing along silver grain boundaries is suggested as the main diffusionmechanism.

采用原位X—射线衍射、高分辨透射电镜截面观察和光吸收谱测试等手段研究了退火过程中Ag/Si多层膜的扩散、结构演变及光学性质变化，并与可固溶性金属/Si系多层膜进行了比较。揭示了Si原子沿Ag晶界的扩散为主要的扩散机制。

The requirements for lasers,optical setups,recording ma terials and chemical processing to make large-format holograms of great scenes are discussed.A model of Suzhou Industrial Park measuring 160×180cm,and other large models were recorded using an argon ion laser with an etalon on self-prep ared ultra-fine-grain silver halide plates(average grain size:20nm).Large-for mat transmission holograms (size:50×40cm) of high diffraction efficiency and lo w noise level were obtained with proper exposure and chemical processing.

分析了制作大幅面大场景激光再现全息图对激光器及光路布置、记录介质、化学处理等方面的特殊要求，用自制的颗粒平均尺寸为20nm的超细颗粒卤化银全息干板及带标准具的氩离子激光器，对场景面积达160×180cm的苏州工业园区等模型作全息记录，经适当曝光和化学处理，制得了幅面达50×40cm，且具有较高衍射效率和较低噪声的透射全息图。

The crystalline morphology and lattice constants of silica brick s in several status were investigated by the optic microscope, scanning electron microscope and X-ray diffraction.

利用光学显微镜、扫描电镜和X射线衍射仪研究了几种不同状态硅砖的晶体形貌和晶格常数。

The surface morphology and composition of the coating were analyzed by scanning electron microscope, X-ray diffraction, electron probe microanalyzer and infrared spectroscopy, and the effect of high-energy shot peening to Ti substrate and hydroxyapatite coating was discussed.

用扫描电镜、X射线衍射仪、电子探针和红外光谱仪分析了涂层表面形貌和成分，探讨了表面高能喷丸工艺对钛基体及涂层的影响。

However, the long rang order of nanomaterial has been broken. In the case, traditional X-ray diffraction technique can not provide enough structure information. The EXAFS technique is sensitive to short range order and very suit for these materials.

但对于纳米材料来说，长程的有序结构已经被破坏，通常的X射线衍射方法已不能得到充分的结构信息，而对短程有序敏感的XAFS方法则特别适合研究此种材料。

Ni0.5Zn0.5Fe2O4 nano-crystalline was prepared by sol-gel self-propagating combustion method, and sintered at 550, 800 and 1050 ℃, respectively. The analysis methods of X-ray diffraction and microwave network analyzer were used to investigate the products after annealing.

中文摘要：采用溶胶-凝胶自燃烧法制备了Ni0.5Zn0.5Fe2O4纳米晶，将其分别在550、800和1050 ℃下二次退火2 h，利用XRD和微波矢量网络分析方法对二次热处理产物及其电磁性质进行了研究。

When the discrete diffraction is balancing with the self-focusing effect, the negative defect's discrete soliton will be formed.

当阵列衍射和非线性平衡的时候，就会形成负缺陷的离散孤子。

The self-focusing properties, design, fabrication and diffraction properties of Varied Line-Space grating were investigated in detail.

利用变栅距光栅的衍射光束自聚焦特性，设计和制作了变栅距透射光栅，并对其自聚焦特性进行了研究。

The microstructure of the coating was characterized using trans mission electron microscopy, X-ray diffraction and scanning electron microscopy equipped with energy dispersive X-ray analysis. The formation mechanism of amorphous/nanocrystalline was discussed. The wear behavior of the coating and the substrate was evaluated with wet sand rubber wheel abrasion tester at ambient temperature.

采用扫描电镜、能谱分析仪、透射电镜和X射线衍射仪等设备对涂层的组织结构进行了表征，着重分析了非晶纳米晶的形成机制，并利用湿砂橡胶轮式磨损试验机对涂层的磨损性能进行了研究。

Objective:To explore the feasibility of laparoscopy in diagnosing and treating of abdominal diseases.

目的：探讨腹腔镜用以诊断腹部外科疾病及选择治疗方案的可行性。

The lifetime of nylon 1010 and nylon 1010/POSS composites decreased with increasing temperature.

热重-红外联用分析表明尼龙1010在氮气气氛下的降解产物主要为小分子的低聚物，POSS并不改变尼龙1010降解产物的组成。