晶体

In the thesis, we use R-Soft program to find the appropriate photonic crystal structure which can replace laser cleaved mirror and provide high reflectivity as high as 71% for 980 nm laser. Furthermore, we replace mirror with air bridge mirror in order to prevent light from escaping below photonic crystal. Then we observe whether it can provide higher reflectivity.

本论文利用R-Soft软体来对二维光子晶体做模拟，找出适当的二维光子晶体排列，能对於波长980 nm雷射提供高的反射率，以使光子晶体能取代一般的雷射的劈裂镜面，制作反射率高达71%的雷射镜面，另外，更进一步将镜面改为空桥式镜面，以避免光从有限深光子晶体下方散逸，来研究是否能提供更高的反射率。

The results show that, Main crystallization phase of glass ceramic was hedenbergite, and the minor crystallization phases were augite and hypersthene. With increasing boron mud addition, the amount and the size of crystallization phases both gradually increased, the configure of crystallization phases transformed from the branch, the ball, to the block. The transformation from the branch to the ball could improve the properties of glass ceramic, and the transformation from the ball to the block could worsen the properties of glass ceramic.

结果表明：矿渣微晶玻璃的主析晶相为钙铁辉石，次晶相为普通辉石和紫苏辉石；随着硼泥配入量的增加，矿渣微晶玻璃中晶体的析出量和尺寸均逐渐增加，晶体形态由枝晶向球晶及块状晶体过渡；枝晶向球晶转变可以明显改善矿渣微晶玻璃的性能，而球晶向块状晶体的转变则恶化了微晶玻璃的性能。

A series of equipments such as X-ray diffractometer, scanning electronic microscope, electronic probe microanalysis, transmission electronic microscope and instruments for measuring thermoelectric properties were used to investigate the effect of microstructures on the thermoelectric properties of these La〓Fe〓Co〓Sb〓 compound systematically. Crystal structure simulation shows a huge void in the lattice of binary skutterudite compound.

采用晶体结构计算软件JSVl.07模拟了该种化合物未填充稀土原子的晶体结构，根据模拟结果找出在该种化合物中存在着较大的空隙，通过设计在该位置填充稀土原子得到了填充稀土原子的填充skutterudite化合物的晶体结构，直观地了解了填充skutterudite化合物的晶体结构特性。

And the control volume finite difference method based on the boundary fitted curve line coordinate for the coupling model of whole system;(2)introduction of the relative temperature gradient function Sv , which is used to determine the evolution of crystal / melt interface shape, because the shape of the crystal / melt interface during crystal growth is an important factor in determining the crystal quality.

本文采用数值模拟方法，研究了传热对晶体生长的影响，包括以下几个方面：(1)建立了晶体的简化模型，熔体的简化模型和相应的数值计算方法；为了从总体上研究晶体生长的动态特性，首次导出了旋成体曲线座标系的SIMPLEC算法，并成功地应用于晶体生长的整体模拟。

In this dissertation, we have prepared 15 new MOFs by using different organic carboxylate ligands, and analyzed their topology structures as well as explored their multifunctional properties.

本论文依据晶体工程学原理，从金属有机骨架晶体材料的功能性出发，主要研究这类化合物的合成、拓扑结构和多功能性质，旨在探索金属有机骨架晶体材料的结构多样性；并在结构研究的基础上，开发新型次级结构单元以及具有新颖拓扑结构的金属有机骨架晶体材料的设计合成与性质应用。

At the central frequency of the reduced units 0.5(ωa/2πc), when the transmission band of photonic crystaln is completely inside the band gap of photonic crystalmm, both sharing the same central frequency as their symmetry centers, mirror symmetrical photonic quantum well is formed.

针对光子晶体mnm模型，选择适当的结构参数，通过传输矩阵法对其透射谱进行计算模拟发现，在归一化中心频率0.5(ωa/2πc)处，当光子晶体n的导带处于光子晶体mm的禁带中，且两者均以中心频率处为对称中心时，构成镜像对称的光子晶体量子阱结构。

Under the condition of the borehole and sandstone formation filling with oil and water, respectively, the ability is different when different energy windows are selected to distinguish formation by simulating the detector response spectrum of various diameters and length of NaI and BGO crystal. The C/O value difference of BGO crystal is higher than that of NaI crystal when the energy window includes photoelectric peak, the first and the second escape peaks, but it is less affected by the different sizes of detector crystal. Using photoelectric peak corresponding to the energy window, the C/O value difference of BGO crystal detector is much larger than that of NaI, but it increases with the crystal size increasing. The C/O value is greatly affected by energy drifting, while relatively a little by energy resolution.

对于井眼和地层流体分别为油和水砂岩地层，模拟改变NaI和BGO晶体探测器的直径和长度时的非弹性散射γ射线响应能谱，采用不同能窗处理方法对地层流体的分辨能力不同，选取光电峰和第一、第二逃逸峰对应的能量窗时，BGO晶体探测器比NaI晶体探测器测量的C/O差值大，但受尺寸的影响不大；采用光电峰对应的能量窗时，BGO晶体探测器测量的C/O差值比NaI的大得多，且随尺寸的增加差值增大；能量道的漂移对C/O值影响较大，而能量分辨率对差值影响相对较小。

This indicates that the physical properties of PWO crystal are sensitive to the lattice structures.

这说明钨酸铅晶体是一种结构敏感的晶体；计算结果为研究钨酸铅晶体的光学性质与晶体结构之间的关系提供理论基础。

The Influence of Temperature and Humidity on Moisture Absorption and Deliquescence Property of Black Powder;2. Anhydrous solvent was chosen for CMP to avoid crystal craze and deliquescence .

介绍了硼酸锂铯晶体的应用前景及在化学机械抛光过程中存在的问题，简要分析了晶体在常温下开裂的机理，选用无水溶剂对晶体进行化学机械抛光以防止加工过程中晶体的潮解开裂。

Then with the relations between the output of interface 1 and the input of interface 2, double refraction and/or double internal reflection in a crystal along two successive interfaces can be calculated.

在惠更斯定理的基础上，对从空气到晶体的折射、从晶体到空气的折射、近光轴入射的晶体全内反射和近光轴反射的晶体全内反射这四种单个界面上的双折射双反射情况，给出了同时适用于o光和e光的光线方向和光波法线方向的普遍公式。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。