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Three types of home gateways are described, using the same software framework of double protocol stacks. One is TCP/IP protocol stack, and the other is the CEBus stack, which is integrated with the software of DLL, network layer and and application layer.

本文设计了三款各具特色的家庭网关，提出并实现了TCP/IP和CEBus双协议栈的软件框架，主要以代理服务器的模式实现家庭网络的Internet接入，免去了复杂的客户端软件。

One kind of improved pulse width encoding scheme and the channel access arithmeticare presented to implement the functions of the physical layer and the data link layer of CEBus.

完成了MCS-51架构的家电控制SoC芯片—ZHHN600总体设计，集成有家电控制的常用接口，设计了基于CSMA/CDCR技术CEBus链路层IP。

As the most important part of the article, the chapt five analyses a definition to plot a main body in the converse logistics system and a layer arrangement and illustrate a function in every layer of this system.

通过借鉴国外发展经验，从协调及协调机制理论出发，在第四章定义了电子产品逆向物流协调机制定义，为下一步协调机制模型的建立作了充分的储备。

So this thesis discusses the multi-layer professional training model of educational technology from five directions:Chapt er 1,to research the condition of educational technology in China,relying on it,analyze the crisis and embarrassed situation of educational technology in China;Chapter 2,to research the condition of foreign educational technology, especially in American;Chapter 3,to contrast the difference and similarity between domestic and international educational technology from training corpus,training environment,training programme and the direction of the graduation.Point out the importance of making our own training model;Chapter 4,the core part,to discuss the multi-layer professional training model of educational technology from three layers,five aspects(the reason,purpose,academic position and professional position,training object,course);Chapter 5, to analyze the impact of the teacher's training of primary and junior high school to the undergraduate's education of educational technology.

因此本文从五个方向分五章探讨了教育技术学多层次人才培养模式：第一章，通过研究教育技术在中国的发展状况解析教育技术在中国的发展危机和尴尬局面；第二章，研究以美国为代表的国外教育技术的发展状况，重点分析美国主要高校的培养模式；第三章，从培养主体、培养环境、培养方案、方案的实施办法以及学习者的毕业流向等方面对比分析国内外教育技术的异同点，指出培养中国特色的教育技术人才的重要性；第四章，也是最核心的部分，从三个层次、五个方面(教育技术学得以存在和发展的原因、目的、学科定位与专业定位、培养目标、课程设置)探讨了教育技术学专业多层次人才的培养模式；第五章，浅析了中小学教师培训对教育技术学本科教育的冲击。

In order to understand the charier charge transport and their recombination process, and to improve the EL performance, double-layer TPD/ASPT or ASPT/Alq3 and triple-layer TPD/ASPT/Alq3 structures were designed and the EL properties were further studied.

为了探索ASPT中载流子传输与复合过程，并提高器件性能，设计了ASPT/Alq3双层和TPD/ASPT/Alq3三层结构的器件，进一步研究了它们的光电特性。

In virtue of the particularity of structure layer, the sample molding and design ways are different from the one for surface layer of mixes. Through parallel trial studying Marshall hit and circumrotate press molding, traditional Marshall design method and mechanics index method, the paper brings forward the molding and design method adapting to different types of ATBs.

由于其所处结构层的特殊性，试件成型方法、混合料设计方法均与沥青混合料面层有所不同，通过对比研究马歇尔击实成型和旋转压实成型、传统马歇尔设计方法和力学指标法，提出了适合不同沥青稳定碎石基层混合料类型的成型和设计方法。

3D models of these structures were saved as STL format, and then input Imageware 9.0 software to be re-touching and re-dividing. Results 1.Three-D visualization study on continuous thin-layer CTA: The technique of continuous thin-layer CTA of limbs provided new way to clinicist who could get the message of variation and pathological changes.

利用Amira提供的画笔、套索、魔术棒和Blow四种图像分割工具，对皮肤、血管及骨骼结构：进行轮廓提取、生成面片，根据计算机的配置情况对轮廓线进行适当的简化，进行表面重建和体重建。

The clinoid segment of ICA was surrounded by two fibrous rings:a distal ring formed by the superficial dural layer and a proximal ring formed by the deep dural layer.

颈内动脉穿出海绵窦上壁时，浅、深两层硬膜分别形成远侧硬膜环和近侧硬膜环。

Results show that the single-layer SiC coating with B2O3 is compacter than those with MgO and Al2O3. Different phases exist in the three different single-layer SiC coating.

SEM、EDS和XRD等结果分析表明，含有B2O3的单层SiC涂层最为致密，其次为Al2O3和MgO；并且这三种不同的单层SiC涂层中含有不同的相。

Double adhesive tapes are made compositely of antistatic varnished fabric for the inner layer and tear-resistant fiber cloth for the outer layer in an overall misplacement, which increases its strength greatly, has a longer service time, is uniform in overall thickness, good in deviation prevention, fine and smooth in its surface and excellent in super-thin bonding lining.

双层粘合带，内层用抗静电漆布，外层用抗撕纤维布，整体错位复合而成。强度大幅度提高，使用时间长，整体厚度均匀，防偏性能好，表面光滑细腻，加工超薄粘合衬

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。