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This article is divided into seven parts, the first part is the structure of LiNbO ; The second part is the basic physical property (especially for optical property); The third project is for the mix substance which takes some operation for LiNbO crystal; The 4th and 5th part for cyclical polarization niobic acid lithium crystal synopsis and application; The sixth part for Laman spectrum synopsis and the seventh part is the something about experiment.

本文共7部分，第1部分为铌酸锂晶体的结构；第2部分为基本物理性质；第3部分为铌酸锂晶体的掺工程；第45部分为周期极化铌酸锂晶体的简介及应用；第6部分为拉曼光谱简介；第7部分为实验部分。

This article is divided into seven parts, the first part is the structure of LiNbO ; The second part is the basic physical property (especially for optical property); The third project is for the mix substance which takes some operation for LiNbO crystal; The 4th and 5th part for cyclical polarization niobic acid lithium crystal synopsis and application; The sixth part for Laman spectrum synopsis and the seventh part is the something about experiment.

本文共七部分，第一部分为铌酸锂晶体的结构；第二部分为基本物理性质；第三部分为铌酸锂晶体的掺工程；第四五部分为周期极化铌酸锂晶体的简介及应用；第六部分为拉曼光谱简介；第七部分为实验部分。

Physical and chemic properties of Cr:LiSAF aresummed up. The characteristic of KN crystal is analyzed. At normal temperature, KN crystal can obtain noncritical phase match of 90 at wavelength of 857nm.

对Cr：LiSAF晶体的物理和光学性质进行了总结，同时对KN晶体各个面内的相位匹配角度和有效非线性系数进行了计算并对其相位匹配特性做了分析。

The 20 mm long KTA crystal cut for typeⅡ noncritical phase matching was adopted as the nonlinear crystal parametric converter in this experiment.

激光基质材料采用Nd：YVO4晶体，采用按Ⅱ类非临界相位匹配切割、长20 mm的KTA晶体作为非线性光学晶体。

Grounding on the purpose of industrialization of laser, based on the thought of astigmatism compensation and thermal stability of the cavity, we employed high power LD to pump Nd:YVO4 crystal and used the introcavity frequency doubling with type 1 noncritical phase-match LBO crystal, which has high damage threshold. The cavity parameters are optimized by the use of ABCD theory and the resonatorstructure CAD software.

立足于激光器的产品化，基于谐振腔的像散补偿和热稳定性的设计思想，采用大功率LD单端泵浦Nd：YVO_4晶体，具有高光损伤阈值的Ⅰ类非临界相位匹配LBO晶体腔内倍频方案，应用ABCD定律和腔结构模拟软件CDA设计并优化了一组腔参数。

The results show that the heterostructure photonic crystal can extend remarkably the photonic bandgap compared with the periodic structure;a defect is inserted into the heterostructure photonic crystal,the nontransmission band is wider than that of the symmetric structure without heterostructures,(1H1L)_m(1H)_n(1L1H)_m.

结果表明，与周期结构相比异质结构光子晶体可以显著地拓宽光子晶体的光子带隙；在该文提出的结构中引入缺陷，与(1H1L)m(1H)n(1L1H)m光子晶体相比，产生缺陷模式光子带隙范围明显拓宽，适当调整缺陷层的数目、位置和厚度可得到多通道滤波；并研究了实际操作中随机误差带来的影响，随无序度的增大，其带宽基本不变。

Finally, the cytotoxic and antibacterial activities of the oxamido-bridged binuclear complexes were studied in vitro.. This dissertation consists of three sections as follows:1. The crystal structure of a oxamide dinitrate,(1) [H_4dmaeoxd](NO_3)_2 H_2dmaeoxd = N,N\'-bis[2-ethyloxamide, has been obtained. The diversity of complexes with different structures is carried out by successful synthetic strategy of controlling species of metal ions, counter anions, pH values and solvents in the course of synthesis. Four dinuclear complexes bridged by trans-dmaeoxd2-: [Cu_2_2](ClO_4)_2 (2), [Cu_2_2](ClO_4)_2 (3),、[Cu_2(Me_2phen)_2](ClO_4)_2 (4), [Cu_2_2(H_2O)_2] (5); Four dinuclear complexes bridged by cis-dmaeoxd2-: [NiNi_2](ClO_4)_2 (6), [CuNi_2](ClO_4)_2·2CH_3OH (7), [CuZn_2]-(ClO_4)_2·2H_2O (8), [Cu(H_2O)Ni_2](ClO_4)_2.0.5CH_3OH (9); three 1-D polynuclear complexes: [Cu_2]_n·nH_2O (10), [Cu_2(H_2O)_2-]_n·4nH_2O (11), [Cu_2(H_2O)]_n(NO_3)_n·2nH_2O (12); one 2-D polynuclear complex,[Cu_6_3(μ_3-OH)_2(H_2O)_2]_n(ClO_4)_(4n).2nH_2O (13); the others: [VO(H_2O)]·2H_2O (14), [Zn_2_4](ClO_4)_2·H_2O (15), [Cu_2]·2DCM (16) have been synthesized and characterized by X-ray single crystal diffraction, elemental analysis, IR spectra.

本论文主要包括以下三部分：一、合成得到了一个草酰胺配体硝酸盐的单晶结构，[H_4dmaeoxd](NO_3)_2 (1)；通过调控金属离子的种类、端基配体、抗衡阴离子、溶剂、pH值等条件定向合成了四个反式草酰胺桥联双核铜配合物：[Cu_2_2](ClO_4)_2 (2)、[Cu_2_2](ClO_4)_2 (3)、、[Cu_2(Me_2phen)_2](ClO_4)_2 (4)、[Cu_2_2(H_2O)_2] (5)；四个顺式草酰胺桥联同/异双核配合物：[NiNi_2](ClO_4)_2 (6)、[CuNi_2](ClO_4)_2·2CH_3OH (7)、[CuZn_2]-(ClO_4)_2·2H_2O (8)、[Cu(H_2O)Ni_2](ClO_4)_2.0.5CH_3OH (9)；三个一维聚合物： [Cu_2]_n·nH_2O (10)、[Cu_2(H_2O)_2-]_n·4nH_2O (11)、[Cu_2(H_2O)]_n(NO_3)_n·2nH_2O (12)；一个二维聚合物： [Cu_6_3(μ_3-OH)_2(H_2O)_2]_n(ClO_4)_(4n)。2nH_2O (13)；单核钒配合物[VO(H_2O)]·2H_2O (14)、草酸根桥联双核锌配合物[Zn_2_4](ClO_4)_2·H_2O (15)、美洛西康铜配合物[Cu_2]·2DCM (16)，利用元素分析、摩尔电导、红外光谱、电子光谱和单晶X-射线衍射对上述所得化合物进行了结构表征，探讨了结构影响因素，并研究了其超分子结构。

Oxyfluoride materials are composed of fluoride micro-crystal which is inserted into oxide glass host. Rare earth ions were priority deposited into fluoride micro-crystal, with lower phonon energy environment.

氟氧化合物由氟化物微晶镶嵌于氧化物玻璃基质中构成的，掺杂的稀土离子优先沉淀于氟化物微晶中，处于低声子能量的环境。

Due to the bad crystal habit and crystal size distribution of the product from the domestic factory and the higher content of impurities, the quality of copper sulfate pentahydrate has been affected by these factors.

五水硫酸铜是一种重要的无机化工产品，广泛应用于化学工业和电镀工业中，同时也作为动物饲料矿物添加剂和杀虫剂广泛的运用于农业。

Keywords: Ni, phenethyl malonic acid, crystal structure, water cluster 1 INTRODUCTION Molecular structures of metallic complex and intermolecular weak interaction mode have become the focal fields of crystal engineering and supramolecular chemistry.

主题词： Ni，苯乙基丙二酸的酸，晶体结构，水群 1金属复杂和分子间的弱相互作用方式介绍分子结构成为了水晶工程学和supramolecular化学的焦点领域。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！