查询词典 diffraction

A novel scanning force microscope is studied in this dissertation. The point diffraction interference phenomenon on the V-shaped cantilever is described.

本文在分析了现有扫描力显微镜的优缺点的基础上，设计了一种新型的激光扫描力显微镜，对激光扫描力显微镜的各组成部分进行了详细的分析和研究。

Scanning electron microscopy,X-ray fluorescence spectroscopy,X-ray diffraction and X-ray photoelectron spectroscopy were used to analyze the microstructure,chemical composition,crystalline structure and compound constitute of the corrosion scale from cast iron pipe and galvanized steel pipe in drinking water distribution systems.

使用扫描电镜、X荧光光谱分析、X射线衍射分析以及X光电子能谱对给水管网中铸铁管和镀锌钢管上的管内壁腐蚀管垢进行微观形态、化学组成、晶体结构和化合物构成等物理化学特征分析。

The main peaks of X-ray diffraction shows that the lattice parameters of LLTGS are larges than those of pure.The effect between the structure and the pyroelectric property were discussed.

测定X射线衍射主峰显示LLTGS晶体的晶胞参数大于纯态的TGS；讨论了结构对热释电性能的影响。

(NH_4)_2GeF_6·H_2O is obtained as light-green single crystal from the low-temperature solvothermal reaction of GeO_2, NH_4VO_3 and HF in pyridine-water and characterized by the IR, elemental analysis, TG-DTA and single crystal X-ray diffraction.

化合物(NH_4)_2GeF_6·H_2O由GeO_2，NH_4VO_3和HF在吡啶-水体系中低温溶剂热条件下合成，并用IR、元素分析、TG-DTA和X射线单晶衍射进行了表征。

M: Using transmission electron microscope and x-ray diffraction method, we have studied samples of aer-borne particulates, collected in Chongqing, which are seriously suffered from acid rain.

例：本文利用投射电镜和 X 射线衍射技术对酸雨危害较为严重的重庆市区大气颗粒样品进行了较为细致的研究工作。

Had been investigated by means of X-ray diffraction , transmission electron microscopy , M〓ssbauer effect , X-photoelectron spectroscopy , EDAX, chemical analysis, gas Analysis, vibrating sample magnetometer , differential thermal analysis-thermogravimetry , image analysis, etc..

使用了XRD、TEM、穆斯堡尔谱测量、X光电子谱技术、气体分析、化学分析、EDAX、图象分析、差热-热重、振动样品磁强计等多种分析手段。

By directly solving Maxwells equations in the time domain, FDTD method fully accounts for the effects of reflection, diffraction, and radiation.

通过直接解时域的Maxell方程，FDTD能够完全计算所有反射、衍射和散射波所造成的影响。

The R phase transformation of the NiTi shape memory alloy containing 0.46%Cu has been studied by meane of x-ray diffraction.

本文用X—射线衍射的方法，对含0.46％Cu的NiTi形状记忆合金中的R相变进行了研究。

The tensile strength was tested by using the omnipotence testing machine and the fracture characteristics and phase were analyzed by scanning electron micros copy and X-ray diffraction.

摘 要：分析了钛与不锈钢相变扩散连接的工艺参数，利用万能拉伸试验机测试了接头拉伸强度，利用扫描电镜及X射线衍射分析了接头断口形貌及组成相。

In this work, nanostructure samples of La1-xCaxMnO3（x=0.2、0.3、0.4、0.5）were prepared by hydrothermal-precipitation method . The structural characterization of the powder samples were done by X-ray diffraction. XRD patterns showed that all the samples ate single perovskite-type phase withoutother impurity or secondary phase. The shape and size of samples were performed on Scanning Electron Microscopy. SEM photographs investigated that temperature of hydrothermal effects the phase of samples and alkalinity of the reaction mixture by ΔTad-T curve measurement device at low magnetic fielded

本论文采用水热共沉淀退火法制备了La1-xCaxMnO3（x=0.2、0.3、0.4、0.5）系纳米结构，用X射线衍射仪确定产物为单相钙钛矿结构，无任何杂峰及第二相；用扫描电子显微镜与透射电子显微镜分析了产物的大小和形貌，发现水热温度对产物的形成起决定作用，随着温度的升高，产物由薄膜状向丝状转变，而溶液的碱度可控制产物的形貌和大小，当碱度为6.35mol/L，水热温度为240 C时，La0.6Ca0.4MnO3的主要形貌为纳米丝并有少量纳米颗粒，纳米丝平均直径为40nm；最后测量了粉末样品在低磁场（1.4T）下的磁热效应，发现水热共沉淀退火法制备样品的最大绝热温度明显高于球磨法制备样品的最大绝热温变。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。