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Nanotubular titanates, with an external diameter of around 8 nm and a wall thickness of about 1 nm, are prepared by hydrothermal processing, and the thermal stability is tested. The products are charactrized by transmission electronic microscopy, X-ray diffraction and thermogravimetric analysis.

采用水热合成方法制备出外径约8 nm，壁厚为1 nm的纳米管，以TEM，XRD和TG等分析手段对不同工艺条件下获得的产物进行了表征，对它们的热稳定性进行了测试。

Both TEM photograph and X-ray diffraction indicate that its size is of the ordedr 70〓.

用加热固态Cd〓方法，制备了凝聚相CdSe粒子，X-射线衍射表明它是立方晶体。X-射线衍射计算和TEM分析都说明它们的大小为7nm。

Polyimide ; film ; orientation structure ; film property ; X-Ray diffraction ; pin hole photograph ; determination of structure

聚酰亚胺；薄膜；取向结构；薄膜性能； x 射线衍射；针孔照相；结构测定

This article main research take the titanium sulfate and the iron trichloride as a raw material, take the urea as the alkali source, uses the cryochemistry method, the synthesis superfine TiO2-Fe2O3 compound photocatalyst, and has studied the sample structure and the ultraviolet receptivity with the X-ray diffraction and the ultra-violet spectrograph.

本文主要研究以硫酸钛和三氯化铁为原料，以尿素为碱源，采用低温化学方法，合成超细TiO2-Fe2O3复合氧化物，并用X射线衍射和紫外光谱研究了样品的结构和紫外吸收性能。

The composition,structure and optical band gap of the films were characterized by energy dispersive spectrometer and X-ray diffraction.

通过X射线能谱、X射线衍射仪的测定，对薄膜进行了结构及所包含硅晶粒大小的表征。

The silver nanoparticles were characterized by using X-ray diffraction,energy dispersive spectrometer and scanning electron microscope.

在70℃时采用聚乙烯吡咯烷酮和氢氧化钠的混合水溶液，利用葡萄糖还原硝酸银制备了银纳米颗粒。

The degradation process of methyl red was studied by use of gas chromatography-mass spectrometer and X-ray diffraction detection.

利用气－质连用检测仪及X射线衍射仪对甲基红降解过程作了进一步研究。

The monitoring of synthesis process and the characterization of the structure and morphology of the ultrafine particles were performed by the energy dispersive spectrometer, X-ray Diffraction and Transmission Electron Microscope.

通过能谱仪，X射线衍射仪和透射电镜对纳米粒子的组成、结构、形貌、粒径进行了表征和分析。

The CeO2 thin films were characterized by X-ray photoelectron spectroscopy and spectrometer, X-ray diffraction, Raman spectroscopy and scanning electron microscopy.

采用光电子能谱、X射线衍射、拉曼光谱和扫描电镜等测试方法表征薄膜的特性。

Gel permeation chromatography,Fourier transform infrared spectrometer,X-ray diffraction were adopted to characterize and analyze the degraded products.

用凝胶渗透色谱、傅立叶变换红外光谱和X射线衍射对降解产物进行表征分析。

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。