查询词典 diffract

The influence of Ce, Nd and Sr on the as-cast microstructure of AZ91 alloy was investigated by optical microscope、scanning electron microscope、electron probe microscope analyzer、differential thermal analyzer and X-ray diffract analyzer, et al.

本文以目前使用最广泛的AZ91镁合金为研究对象，分别添加不同含量的稀土元素Ce、Nd和碱土元素Sr，研究了三种元素对AZ91镁合金微观组织和腐蚀性能的影响。

At the same time, the diffract peaks of (110) and (006) crystal faces were also found when diffraction angle is about 65 degrees or 82 degrees.

采用 X光衍射法对糠醇树脂和聚苯胺树脂碳化产物的石墨化度和微观结构进行了研究。

What kind of wavelength would an electromagnetic wave have to have in order to diffract dramatically around your body?

要让电磁波在你身体周围产生明显的衍射，波长应该是多少呢？

The results showed that the constitutes of thin films by PLD consisted with the targets ,and realizing thin films deposited with same constitutes;All of the films were heteromorphism;It was revealed that the effect of the growth temperature was significant to the diffract peaks of the films and that of the substrate was negligible;the films had rather flatness surface and compact structure;the peak-to-tail roughness of PbSe thin films surfaces was less than 200nm and that of ZnO and Mn doped ZnO films surfaces was less than 100nm;Flat degree was improved with falling of growth temperature and laser energy .

测试结果表明：PLD法制备的薄膜的成分与靶材的基本一致，实现了同组分沉积；所有制备的薄膜都为多晶薄膜，发现薄膜生长温度是影响薄膜衍射峰的主要因素，基片类型对此影响不明显；所有薄膜表面比较平滑，结构比较致密；其中PbSe薄膜的表面不平整度小于200nm，ZnO和Mn离子掺杂ZnO薄膜的表面不平度小于100nm；生长温度和激光能量降低能提高薄膜表面的平整度。

XRD,X-ray EDS analysis,AFM and Fourier transform infrared spectroscopy were employed to characterize PbSe thin films. The results show that all of the films were heteromorphy and the growth temperature has effect to the diffract peaks of the films. The contents of PbSe thin films by PLD consisted with the targets,and realizing thin films deposited with same constitutes; the films had rather flatness surface and compact structure; the peak-to-tail roughness of PbSe thin films surfaces was less than 200nm;they had sensitivity to light of a specified wavelength and obvious absorption edge at 5μm corresponding to band-gap width of PbSe thin films;light of wavelength less than 5μm was strongly absorbed.

通过脉冲激光沉积法在Si(111)和SiO2玻璃基片上制备了PbSe薄膜。X射线衍射、X射线能谱、原子力显微镜、傅里叶变换红外光谱仪测试结果表明：所有制备的薄膜都为多晶薄膜，发现薄膜生长温度对薄膜衍射峰有一定影响；PLD法制备的薄膜的成分与靶材的基本一致，实现了同组分沉积；所有薄膜表面比较平滑，表面不平整度小于200nm，结构比较致密；PbSe薄膜对红外光具有敏感的响应特性；在波长为5μm处存在有明显的吸收边，此吸收边对应于直接带隙PbSe材料的禁带宽度；对应于波长小于5μm的红外光，PbSe薄膜存在有明显的强吸收。

And pH7. 5 conditions were obtained and diffract X-rays to 2. 0〓 and 1. 8〓 resolution, respectively. Both crystals are isomorphous and belong to the space group P1; only one AB-heterodimer is in the whole unit cell.

在pH 6.5和7.5两种结晶条件下，AHP IX-bp的整体结构很相似，均方差仅为0.122 〓，但在pH 6.5条件的晶体结构中，His B61具有双重构象，这种结构的变化可能与AHP IX-bp活性的pH依赖性相关。

Secondly, three kinds of mathematics model of optical vortex beams were introduced here. Then the propagation dynamics of optical vortex beams through the non-axis symmetry system is studied, this chapter includes the introduction of the symmetry vortex beam and the non- symmetry vortex beam, the deduction of the Collins diffract integral formula for the non-axis symmetry system, and the transformation of the vortex beam passing through the non-axis symmetry system has been described by using the numerical simulation. Then the general calculation for the orbit momentum of vortex beams, the matrix form for the orbit momentum of vortex beams, and the photon method to describe the orbit momentum of vortex beams are also introduced here. Finally, the interference about optical vortex beams was studied.

本文对涡旋光束进行了较为全面的介绍和研究，主要内容包括：（1）光学涡旋光束的基本理论，主要是介绍了单个光学涡旋光束在柱坐标中的一些表征，涡旋光束的奇异相位和光学涡旋的相位结构；（2）光学涡旋光束的三种数学模型；（3）光学涡旋光束在非轴对称光学系统中的传播动力学，其中介绍了对称涡旋光束与非对称涡旋光束，推导了非轴对称光学系统的 Collins 衍射积分公式，并利用计算机模拟图描述了对称涡旋光束经过非轴对称光学系统后涡旋形态的改变；（4）涡旋光束轨道角动量的一般计算，涡旋光束轨道角动量的矩阵形式，光子法描述涡旋的轨道角动量；（5）涡旋光束的干涉。

It is found in field detection that ultra high frequency signals can diffract from the joint of transformer. The feasibility of using external UHF sensor for detecting partial discharge activities is discussed, and the external propagation characteristic of UHF electromagnetic wave is investigated via the lab experiment.

针对变压器箱体的接缝处可以衍射出局部放电特高频电磁波信号的现象，在分析变压器箱体接缝对局部放电特高频电磁波传播影响的基础上，探讨了接收天线外部检测特高频信号的可行性，并通过实验研究了局部放电特高频电磁波的外传播特性，通过对信号进行小波包分析，比较了外部接收和内部接收信号的差异。

The (200) peak of X-ray diffract spectrum is main in the thin film.

Ho〓浓度增加时，Ho〓的长波侧辐射相对强度增加。

In order to analyze aberrations qualitatively, a diffract model of centro-symmetrical optical system has been constituted to simulate the diffract pattern of primary aberrations and second aberrations. Then diffract pattern\'s character of each aberration has been analyzed, and the typical pattern with the value\'s change is given.

为了进行定性分析，文中首先建立了一个共轴旋转对称系统的光学衍射模型，模拟了初级像差和二级像差的衍射图像，并逐个分析了初级像差和二级像差的成像特征，给出了伴随波像差数值变化的典型(来源：8ebeAebBC论文网www.abclunwen.com)图像。

He is the most remarkable man that I have ever known.

他是我知道的人中最值得注意的人。

Increased appearance of lymphocele was noticed in patients with diabetic nephropathy, congenital malformations of the urinary tract, and inflammatory diseases, including glomerulopathy and extraglomerular ones, after high-voltage radiotherapy and after removal of the renal graft.

经过高压放射疗法和切除移植肾后，在糖尿病肾病患者、泌尿系统先天性畸形患者和炎症患者身上发现淋巴囊肿有所增加，包括肾小球病和球外疾病等。