双晶

In this thesis, a series of complexes based on aromatic multicarboxylic acids have been successfully synthesized in solutions or under hydrothermal conditions. Their structure and properties are investigated.(1) Eight complex compounds have been synthesized and characterized by X-ray single crystal diffractive technology: The eight complexes are listed as following: [Cu242] complex 1 [Cd22(H2O)4]·4H2O complex 2 [Co(H2btc)(H2O)3] complex 3 [Co2(H2O)2]·H2O complex 4 [Ni22(H2O)4] complex 5 [Cu22(H2O)4] complex 6 [Co(H2biim)2(H2O)2](H2btc) complex 7 [Zn(H2biim)2(H2O)2](H2btc) complex 8 The structure of complex 1 is dinuclear complex resulted from weak interactions（0-D chain）; complex 2 is 1-D chain stucture result from interactions of water molecules; complex 3、4、5、6 are coordination polymers using hydrothermal synthses, where the first kind ligand is H4btc, the second kind ligand is phen and Co2+、Ni2+、Cu2+ as center ions, respectively. While the coordination enviroment of Co2+ is the same in complex 3, the coordination geometries around the Co atoms in complex 4 are obviously different because of the different reaction conditions. In complex 4, the 1-D chains are connected into 2-D layer through carboxy groups of ligand H4btc. The structures of complex 5、6 are 1-D chain stucture result from interactions of carboxy groups in ligand H4btc. Complex 7、8 are homeomorphy compounds. Either of them are linked to the 3-D chains through intermolecular hydrogen bonds. Each H4btc lose two protons and H2btc2- acts as negative electron balance.

合成了8个结构新颖的配合物，并用X-射线单晶结构分析方法确定了晶体结构，分别为： [Cu242] 配合物1 [Cd22(H2O)4]·4H2O 配合物2 [Co(H2btc)(H2O)3] 配合物3 [Co2(H2O)2]·H2O 配合物4 [Ni22(H2O)4] 配合物5 [Cu22(H2O)4] 配合物6 [Co(H2biim)2(H2O)2](H2btc)配合物7 [Zn(H2biim)2(H2O)2](H2btc)配合物8 配合物1是一个依靠弱作用连接的双核铜结构；配合物2借助水分子形成一维链状结构；配合物3、4、5、6是以H4btc为第一配体、phen为第二配体，通过水热法合成的配合物，其中，Co2+、Ni2+、Cu2+为中心离子；配合物3中的二价钴离子具有相同的配位环境，不同反应条件下得到的配合物4中的二价钴离子存在不同的配位环境，在配合物4中，一维链通过H4btc上的羧基形成一个二维层结构；配合物5、6是借助H4btc上的羧基形成的一维链状结构；配合物7、8属于异质同晶结构，它们的分子通过分子间氢键形成三维网状结构，H4btc上的羧基失去2个质子，作为一个二价负离子起到电荷平衡作用。

The chemical structure and mesomorphic properties of this series of compounds were characterized by FT-IR, MS, 1H NMR, polarizing optical microscopy and DSC techniques.

利用FT-IR、MS、1H NMR、POM、DSC 表证了所得化合物的结构和介晶性，并选择几种双液晶基元液晶测定了它们的机械黏度和在主体液晶中的螺旋扭曲力

Using quasi-implicit calculation method, a new dual-parameters mixed-phase microphysical scheme with 5 species of water substance is developed.

本文利用准隐式格式，建立一套比较完善全面的混合相双参数微物理雪晶方案，改进了MM5原显式方案中存在缺陷的几个微物理过程。

But the grain growth, grain semiconduction and grain boundary insulation were influenced by many factors, such as the type and contents of dopants, sintering temperature and so on. Therefore, in this thesis the effect of the restore sintering temperature, the oxygenize temperature, the donor and acceptor dopant on the dielectric and varistor properties of devices were studied. With SEM, the microstructure of SrTiO3-based double function ceramic was analyzed.

而晶粒生长、晶粒半导化和晶界绝缘化受到多种因素的影响，诸如杂质的种类和含量、烧成温度等，因此本论文研究了还原烧成温度、中温氧化温度、施主和受主掺杂等对SrTiO_3基陶瓷的压敏和介电性能的影响，并借助于SEM分析对SrTiO_3基双功能陶瓷的微观结构进行了分析。

When substituting MeOH for MeONa on above technology, however, the methyl ester phosphinic acid with double melting points was also obtained, and its crystal phase was clearly different from its counterpart with single melting point.

若将10-羟基-5，10-二氢磷杂吖嗪-10-氧化物和氯化亚砜的作用产物直接在甲醇溶液中回流，也得到双熔点甲酯，它与单熔点次膦酸甲酯具有不同的晶相结构。

Topics include: properties, preparation, and processing of compound semiconductors; theory and practice of heterojunctions, quantum structures, and pseudomorphic strained layers; metal-semiconductor field effect transistors; heterojunction field effect transistors and bipolar transistors; photodiodes, vertical-and in-plane-cavity laser diodes, and other optoelectronic devices.

主要内容包括：化合物半导体的特性、制备与制程；异质接面、量子结构和假晶应变层的理论与实际应用；金属半导体接面场效电晶体；异质接面场效电晶体以及异质接面双极电晶体；检光二极体、垂直和平面共振腔镭射二极体、以及其他光电元件。

Topics include: properties, preparation, and processing of compound semiconductors; theory and practice of heterojunctions, quantum structures, and pseudomorphic strained layers; metal-semiconductor field effect transistors; heterojunction field effect transistors and bipolar transistors; photodiodes, vertical-and in-plane-cavity laser diodes, and other optoelectronic devices.

主要内容包括：化合物半导体的特性、制备与制程；异质接面、量子结构和假晶应变层的理论与实际应用；金属半导体接面场效电晶体；异质接面场效电晶体以及异质接面双极电晶体；检光二极体、垂直和平面共振腔雷射二极体、以及其他光电元件。

The goal of this thesis is to use standard CMOS process to realize a 1.25Gb/s dual-loop data and clock recovery. To attain the aim of low power what we put emphasis on SOC, deep sub-micron CMOS technology is now being considered because of that advantages such as low power, highly integrated capacity. On the other hand, it does not require a frequency divider and we utilize demultiplexer to retime data.

本论文的主题在完成一个双回路的1.25Gb/s资料与时脉回复器，并且完全使用互补式金氧半制程来实现以达到低功率、高度整合的优点，为达到未来系统晶片强调的超低功率，我们更把时脉的频率降低且在不影响速度的前提下达到成效。

The femtosecond irradiation spectra was used to measure the radiation kinetics process. Fitted by the two exponent model, two time peaks were obtained, corresponding to the interband radiation and the surface defect radiation respectively. This results also strongly suggests that there are two relaxation pathways in the nanocomposite.

利用飞秒发射光谱观测凝胶玻璃中ZnSe纳米粒子发光动力学过程，采用双指数模型进行拟合，得到了两个时间组分：11.2ps和550ps，分别对应纳米品的带间发光和表面缺陷态发光，进一步证实了半导体纳米晶材料受激辐射的两种发光途径的存在。

"Investigation and Development of Miniaturized Chip...

47，281，可应用在无线区域网路之小型化晶片型双频带通滤波器的。。。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。