The thesis includes four sections:Introduce the structures and functions of LMS, LCMS, also analyze and compare some kinds of open source LMSs that have common use.

论文主要包括四个部分： 从功能和结构上介绍了网络教学平台LMS、LCMS，并对几种通用的开源网络教学平台进行分析和比较。

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Objective To investigate the affinity of lipid-coated microbubbles (LCMs) for an injured site in rat brain, and discuss the mechanism of LCM targeting brain lesions.

目的研究脂膜微囊向脑损伤位点靶向性聚集的特点，探讨其向鼠脑损伤区靶向性聚集的机制。

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Objective To investigate the affinity of lipid-coated microbubbles (LCMs) for an injured site in rat brain, and discuss the mechanism of LCM targeting brain lesions.

目的研究脂膜微囊向脑损伤位点靶向性聚集的特点，探讨其向鼠脑损伤区靶向性聚集的机制。

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