外延

In this thesis, I mainly introduce my recent work about the structure of Cr films growth on GaAs (001) surface, the spin density wave of fcc Fe on Cu (100), magnetism of bcc Ni on GaAs (001), interface magnetism of Co/Pd (100) epitaxied by Pulse Laser Deposition.

本论文针对金属Cr在GaAs（001）表面的外延结构和机理，超薄fcc Fe／Cu（100）体系的磁性，金属Ni的体心立方结构的磁学性质，用激光分子束外延制备的Co／Pd（100）界面的磁学性质等问题展开了一些研究，得到了以下结果。

A thin epitaxial layer ( 10gm ) ldmos device used n - burry layer structure was proposed in the paper during the high - voltage device design , which is helpful to improve the drive circu it ? technology

在高压器件研究中，提出了一种外延层厚度为10m 采用n 埋层结构薄外延高压ldmos 器件，对进一步改进驱动电路的工艺有着积极的意义。

Considering the shortcoming of thick epitaxial layer technology , author proposed a thin epitaxial layer ldmos used n - burry layer .

针对目前厚外延工艺的缺点，提出的薄外延ldmos 采用n 埋层，通过优化n 埋层长度、注入剂量可提高器件耐压。

The second approach is using intensional methods to represent the dependency relationships among knowledge representing spaces.

为了解决基于规则外延方法的局限性，针对人工智能中的两大学派（连接主义学派和符号主义学派），目前有两种研究策略，一种是用神经元网或基于实例的推理方法来改进基于规则外延推理方法的健壮性；另一种是用内涵的方法来刻划知识表示空间之间的依赖关系。

A high temperature AlN template was grown on sapphire substrate by metalorganic chemical vapor deposition.

我们通过金属有机化合物气相沉积系统在蓝宝石衬底上外延生长了高温AlN模板及后续生长的AlGaN外延层的研究。

The expression of subunits α5,β1,β3 was detected in normal morulas and increased in blastocysts. The expression of subunit α1 was not detected in morulas or blastocysts, but detected only in outgrowing trophocytes. 3. Expression of integrin β3 in irradiated group embryos was weaker than that of normal group. There was no expression of integrin α1 both in morulas and blastocysts in irradiated group and no difference in the expression of subunits α5 and β1 between these two groups.

结果：1、超声波照射组胚胎贴附率、滋养细胞外延生长率均显著低于正常胚胎。2、正常胚胎桑椹胚期即有α5、β1、β3整合素表达，而无α1表达；囊胚期α5、β1、β3表达增强，仍无α1表达；α1只出现在外延生长的滋养细胞。3、超声波照射组胚胎β3整合素的表达明显弱于正常组，且未见α1表达；而α5、β1的表达两组间无差异。

The results showed that there were serious pyrochlore inclusions in the PZNT film obtained from the LaAlO3(001)substrate,and the PZNT grain s were grown up spontaneously by isolated insular method in three dimension.

生长结果表明：在LaAlO3(001)基片PZNT晶粒以三维岛状自发生长，薄膜中有大量的焦绿石异相；在MgO(001)和SrTiO3(001)衬底上，为三维岛状异质外延生长，薄膜中焦绿石异相几乎消失；引入[001]取向的PZT种膜后，岛状三维生长变为二维生长，显著改善了外延膜的质量，获得了完整的PZNT膜。

The tea art extension is bigger than the sado, its extension is situated between the sado and the tea culture.

茶艺的外延大于茶道，其外延介于茶道和茶文化之间。

Secondly, the two-layer porous silicon with different porosities was formed by the anodic reaction in hydrofluoric acid solution.

在这双层多孔硅上第一次利用超高真空CVD低温外延技术，生长了硅单晶外延层。

The ordering and kinetic surface roughening processes are studied systematically and theoretically to investigate the mechanism of the Epitaxial growth.

本论文对外延生长的有序化和动力学表面粗化过程进行了系统的理论研究，从物理本质上了解材料的外延生长机制，为人工设计高质量的新材料提供理论基础。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐