查询词典 X-ray diffraction

In this paper, a quaternary ammonium salt of chitosan was synthesized and the factors affect on the solubility or degree of substitution of product, such as the concentration of alkali, the time of basification, the content of water in system, the time of dispersing and the method of adding epoxyproryltrimethylammonium chloride, were discussed in detail. The product was characterized by IR, DSC, TG and X-RAY diffraction. The effects of time, humidity and temperature on the gases permeability of the quaternary ammonium salt of chitosan film were researched.

本论文研究了壳聚糖季铵盐的合成反应，对碱化浓度、碱化时间、水的含量、分散时间和醚化剂的加入方式等因素对制备反应的影响进行了考察；应用红外光谱、DSC、TG以及X-射线衍射对产物进行了表征；探讨了时间、湿度和温度对壳聚糖季铵盐膜透气性的影响。

A new X-ray diffraction topographic method was developed and used to study the fracture morphology and process in three point bending test of Mo single crystals.

本文提出一种新的X射线形貌法，并利用它观察三点弯曲Mo单晶的断口特征及其断裂过程。

X-ray diffraction was utilized in phase identification; scanning electron microscopy was used for the analysis of microstructure and fracture surface. Density, hardness and three point bending strengths were measured.

利用X射线衍射分析样品相组成，运用扫描电镜分析材料的显微组织和断口形貌，并对试样的密度、硬度和抗弯强度进行了测定。

A review of different diffraction optical elements developed at BESSY for X-ray focusing is presented.

评述了BESSY研制的用于X射线聚焦的各种衍射光学元件。

The carbonated tree in volcanic breccia has been studied through high resolution transmission electronic microscopy,X-ray powder diffraction and laser Raman spectroscopy.

对浙江温岭火山角砾岩中的碳化树木进行了高分辨电子显微镜、X粉晶衍射和激光拉曼光谱研究。

The dehydration technology of bischofite by butanol complexation distillation was studied by such methods as X-ray diffraction and elementary analysis.

采用X射线衍射及元素分析方法研究了水氯镁石的丁醇络合蒸馏脱水工艺。

Three different calcium oxide catalysts were synthesized from different precursors and characterized by X-ray diffraction, scanning electron microscopy, and temperature-programmed desorption.

用不同的前驱物合成了三种CaO催化剂，并以X射线衍射、扫描电子显微镜、程序升温脱附等方法加以表征。

The structures of the trimetal bridging carbene complex 28 and the ion-pair bridging carbyne complex 31 have been further confirmed by X-ray diffraction studies.

在与羰基金属阴离子络合物PPN和Na的反应中，我们得到了桥卡宾碳键合氢的桥卡宾络合物，并对两个此类桥卡宾络合物进行了晶体和分子结构的研究。

Changsha 410076, China）Abstract: In order to study the slagging characteristics of boiler carborundum combustion liners during pulverized coal stream combustion, the slag samples of pulverized coal stream combusting experiments were investigated by optics microscope and X-ray diffraction.

摘 要：采用光学显微镜和X射线衍射等方法对煤粉气流燃烧过程在碳化硅质卫燃带上的渣样进行测试，并对渣样的形貌及结晶特性、渣样成分与碳化硅之间的高温烧结特性进行分析。

We study the relationship between microstructure and luminescence efficiency for GaN heteroepitaxial films by cathodoluminescence,transmission electron microscopy,and X-ray diffraction.

用阴极射线致发光法、透射电子显微镜和X射线衍射法研究了异质外延GaN材料的发光性质与结构特性的关系。

I can not negligent, he should do what?

我不能不在意了，他要做什么呢？

It is very dangerous to swim in the river alone.

一个人到河里游泳是很危险的。