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Firstly, the thesis introduced the development of VOD, the background and meaning of the program, then the author introduced the associated technology, mainly including the feature of multimedia, video compression technology and the protocols SCTP and RTP. Considering the ambulant of host , fluctuation of bandwidth,high error rate data in wireless networks ,the author proposed some QoS strategy in the wireless networks such as RTP/SCTP protocol stack , connection control of the server, two buffers in the client end point.,TFC congestion control algorithms ,etc. Based these strategies, the team members gives the software and hardware solution of the wireless video-on-demand system and gives the main modules design of the software system. The system adopted the C/S structure including two parts: server and client ,using the Mpeg-2 which is apporiate for networks as the supported format. The thesis emphatically researches on the video-serving module of the server and the sink module, player module of client.

本文首先介绍了视频点播系统的发展现状、课题的研究背景和意义；接着对课题的相关技术进行概述主要包括了多媒体特点，压缩技术，传输协议SCTP以及RTP；针对无线环境的节点移动性，带宽波动性，数据错误率高等三大特点，作者研究设计了无线环境下的QoS策略：RTP/SCTP协议栈，服务器准入控制机制，客户端双缓冲区，TFRC拥塞控制机制等；在这些策略的基础上设计了系统的软硬件解决方案，并对软件体系结构的主要模块进行了设计，整个视频点播系统采用C/S结构，由服务器，客户端2个部分组成，使用适合网络传输的流媒体格式Mpeg-2作为系统支持的格式，文中重点研究了服务器的视频服务模块以及客户端的接收模块和播放器模块，并利用线程池技术对系统进行实现。

Although the outlook is html, but they can also be amended in the background.

虽然前台是html的，但是他们也可以通过后台来修改。

On the background of China's entrance into WTO, the thesis probes into the applicability, existing stipulation and problem of administrative amercement and the way to amerce according to law in legislation and practice,such as ascertaining the applicable condition, principle, procedure and method of determining the amount etc.

本文指出在我国加入WTO的背景下行政罚款存在的问题，如何在立法与实践中"依法罚款"(如确定行政罚款的适用条件、原则、程序、数额确定方法等)，使行政罚款更能够适应时代要求。

Population variation and differences in serum leptin independent of adiposity: a comparison of Ache Amerindian men of Paraguay and lean American male distance runners - Background: Serum leptin variation is commonly associated with fat percentage, body mass index, and activity.

人口变化和差异瘦素独立肥胖：比较酸痛精益美洲印第安人和巴拉圭男子中长跑男-背景：瘦素变化都与脂肪百分比，身体质量指数、活性。

That's because of your Amish background.

因为你有阿米许的血统

Was born. This kind of background makes the Amity date of birth, he was special.

这样的背景使得爱德从诞生之日起，便打上了特殊的烙印。

Background: Hepatic encephalopathy is considered to be mainly caused by increased ammonia metabolism of the brain.

背景：肝性脑病被认为主要是由于大脑氨代谢增加引起的。

BACKGROUND: Amnesic shellfish poisoning is caused by consumption of seafood contaminated by marine neurotoxins, mainly domoic acid.

背景：失忆性贝毒属于海洋神经毒素，是一类具有神经兴奋的氨基酸类物质，其主要成分为软骨藻酸。

BACKGROUND: The selection and development of materials for reconstructing ureteric defect is a hotspot in tissue engineering research, while, human amnion may be a potential ideal natural material.

背景：输尿管等尿路重建材料的选择和开发是目前组织工程学研究的热点，人羊膜是一潜在的理想天然材料。

BACKGROUND AND AIM: The study was undertaken to assess the oxidative stress and DNA damage in human amnion cells induced by TBT.

背景与目的：研究三丁基锡(tributyltin， TBT)对人羊膜细胞FL氧化损伤和DNA损伤的诱导作用。

They have quite a lot of work to do.

他们有许多工作要做。

Let us give you a more elaborate example of this process.

让我们给你这个过程的更多的详细例子。