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In this project, the selection criteria of matrix and reinforcement for obtaining composites with high strength and toughness are determined. The as-cast and aged microstructures of composites reinforced with particles of different strength are observed, and their metallurgical conditions and stabilization mechanisms are analyzed. The aging precipitation behaviors and mechanisms are studied. Some characteristics of nano-materials (micro-distortion areas) are found in 150nm- Al2O3p/Al composites and their formation mechanisms are expatiated. The "flexible" restriction to the deformation of the matrix by low strength AlN particle is observed by in-situ TEM and SEM techniques, and the mechanisms of its resist on cracks propagation and its contribution to composite strength are revealed. The high temperature deformation behaviors of Al2O3p/Al composites are studied. A rare-earth coating is established on sub-micron Al2O3 particles, leading to an improvement in wettability between coated Al2O3 and liquid aluminum and a decrease in infiltration pressure. The strength and ductility of coated particles reinforced composite are also increased. The interfacial characteristics, bonding structures and their formation mechanisms are studied, and the crystal orientation relationships between reinforcement particles and aluminum matrix are investigated. Finally a lighter composite with better balance of strength and damping properties is reinforced with hollow ceramic microballoons of ultra-lower strength.

本项目发现了获得高强度和高韧性复合材料的基体、增强体选择依据；观察了各种强度质点增强复合材料的铸态和时效态微观组织，分析其微观结构形成的金属学条件及稳定性机理，研究了其时效析出规律和时效机制，发现了150nmAl2O3颗粒增强铝基复合材料基体中的纳米材料特征，并解释了其形成机理；利用TEM和SEM动态拉伸技术发现了低强度质点AlN颗粒对变形协调的&柔性强化&机制，揭示了其对裂纹扩展的阻碍作用和对复合材料高强度的贡献；研究了中强度质点的Al2O3颗粒增强铝基复合材料的高温变形行为，并对其进行了稀土界面层设计与制备，改善了颗粒与铝合金之间的界面润湿性，降低了复合材料铸造渗透压力，提高了复合材料的强、韧性；研究了多种复合材料界面结构及形成机理，确定了增强体与基体之间的界面结合机制，分析了复合材料界面处的晶体学位向关系；最后制备了含微孔的中空型陶瓷颗粒增强的特种复合材料，得到了强度和阻尼综合性能较好的轻质复合材料。

In the meanwhile, the TS characteristics of a scattering particle and their relationship are studied when it is passing through the scattering area, In addition to this, the distribution function of particles' shape is defenited in terms of math's method and a new method is putout of which the distribution of particles' shape is captured in according to the power spectrum and spectral distribution characterist of light scattering and finally, the utility of the perturbation ameliorating method and the effect of the particles' shape is modified, so far, the accuracy of measurement of the particles' size is improved effectively.

对此，本文在以Mie散射理论为原理，依据前向接收器接收的前向散射光信息以获取微粒大小信息的测量基础上，对微粒穿越光敏区时的时域与空域的特征以及相关性开展了研究，从数学上定义了微粒的形体分布函数，提出了一种依据光散射功率潜和频谱分布特征来获取微粒形体分布信息的方法，完善了微扰修正理论的应用性，有效地改善了形体的影响问题，从而可提高微粒粒度分布测量结果的准确性。

Using an electrostatic particle sampler to collect 200 nm particles for observation under the SEM, it was found that the agglomerates of titanic oxide nanoparticles were isometric and the primary particles were spherical, the agglomerates of zinc oxide nanoparticles were isometric and the primary particles were flake-shaped, while slica nanoparticles were short chain-like shaped and the primary particles were spherical.

结果发现，圆球状初始微粒的二氧化钛之微粒聚集型态较接近圆球状，扁平状初始微粒氧化锌之微粒聚集型态则为扁长型，圆球状初始微粒的二氧化矽之微粒聚集型态则呈现短鍊状。

The morphological structure of cured vinyl-ester resin and the formation of two-phase structures in vinyl-ester resin has been studied by using SEM and differential scanning calorimetry.The results demonstrated the existence of clusters of gel-particles with a size of about 20 μ m,each cluster of gel-particles containing many gel-particles with coral-like structures.The formation of gel-particles resulted in two-phase structure characterized by the two peaks in the rescanned DSC thermographs of the resin. The cure conditions (temperatures,post-cure) affected microstructure in the cured resins.

采用SEM、DSC研究了乙烯基酯树脂固化过程中凝胶粒子的形成过程及两相结构对固化放热的影响，结果表明，凝胶粒子在固化树脂中呈群状分布，每群凝胶粒子的最大尺寸为20μ m左右，每群凝胶粒子由许多独立凝胶粒子组成；凝胶粒子的形成使树脂产生了两相结构，使树脂的恒温DSC残余放热呈双峰分布；树脂的固化条件影响其微观结构。

, though particles are not in the flow passage of the outlet of the impeller, the absolute velocity of particles has a component velocity whose whirling direction is the same as that of the impeller under the influence of the revolving impeller, in addition, particles do not flow toward the outlet of the impeller, instead, they flow toward the inlet of impeller.

款 尽管粒子是不是在流道叶轮，绝对速度的粒子的一个组成部分，其速度旋转方向是相同的叶轮的影响下， 3777叶轮，此外，颗粒不流向叶轮，相反，它们流向导流叶轮。

Comparing various particles preliminarily, the result showed that the film, which took the hybrid of PMMA/TiO2 nano-composite particles and 10μm PMMA microspheres as the antiglare particles, had integrative effect.

将各种纳米级粉体和微米级粉体与PMMA/TiO2纳米复合粒子的防眩光性能进行初步的比较，发现以PMMA/TiO2纳米复合粒子和10μm PMMA微球混合物作为防眩光粒子的综合效果最佳。

In this dissertation, i has used inverse microemulsions technique to synthesize nano-magnetic particles . This method made nanometer sized cages formed by dissolving surfactant molecules in an apolar organic solvent. The chemical reactions were carried out inside the cages to synthesize nanoparticles. Because the growth of the naoparticles are limited in the cages, the particles were nanometer sized particles.

论文中本人以逆微乳化法去合成磁性奈米粒子，这个方式主要是利用在非极性有机溶液当中使溶解的界面活性剂构成一个奈米级的空洞，控制化学反应在空洞中反应合成粒子，也因为粒子生成受到空洞的限制，以致生成的粒子为奈米粒子。

The compound electrical conductive adhensive was usually made by filling electric conductive particles in the polymer,the electrical conductive particles are aurum,silver, copper, nickel metallic particles etc.

最为常用的是非导电聚合物中填充导电粒子制成复合导电胶，其导电填料主要采用金、银、铜、镍等金属导电粉末。

When the is 0.1mol/l, ratio / is 0 or 4, aged at 95250℃ for 24 hours, anatase and rutile TiO〓 particles are formed respectively; when the ratio / is between 0 and 4, mixture of anatase and rutile TiO〓 particles is formed, the high the temperature the more the rutile phase. When the / is 5, aged at below 200℃ for 24 hours, amorphous product is gained, aged at 250℃ for 24 hours, olive-like TiO〓 particles with brookite structure are formed.

Ti〓=0.1mol·L〓时，95～250℃陈化，/比为0时，得到金红石型TiO〓颗粒，/比为4时，得到锐钛型TiO〓颗粒；/比介于0～4，可得到金红石型与锐钛型混合二氧化钛颗粒，温度越高含金红石型成分越多；/比为5，200℃以下陈化，得无定型产物，250℃陈化得橄榄形单分散板钛矿型二氧化钛。

The effect of crystallization process from polymers, control laws of particles from the long-chain structure of polymer, as well as the self-assembly regulatory mechanism of nano-particles from polymer are investigated , through the control of its morphology and properties of precursor order to get large aperture, high specific surface area, has good thermal stability and catalytic cerium oxide particles.

研究聚合物对结晶过程的影响、聚合物的长链结构对粒子自组装的控制规律以及聚合物对纳米粒子自组装的调控机理，通过控制其前驱体的形貌和性能，以期得到大孔径、高比表面积、具有良好的热稳定性及催化作用的氧化铈颗粒。

Putt your way through 36 fun-filled holes of minigolf on 3D designed courses with elevated greens, bunkers, bridges and water hazards, among other crazy obstacles.

您的推杆方式，通过36个有趣的填孔迷你的三维设计的课程，以提升绿党，掩体，桥梁和水的危害，除其他疯狂的障碍。

Some participles can be used either as attributes or as predicatives.

有些分词既可当定语用，也可当表语用。