分析了各描述符的层次结构特征、生物胁迫与非生物胁迫评价内容以及描述符编码方式；
The characteristic of character structures, the evaluation of bio-and abio-coerce and the compile description symbol were also analyzed.
该方法通过仔细分析知网中关系标知符、动态角色以及例句所描述的各种语义关系，以概念、特征、关系为基础，构建了一基于知网的关系网络。
By analyzing relations described by pointers, event roles and examples, a so called relation network was constructed based on Hownet's concepts, features and relations.
介绍了基于内容的图像检索的定义以及MPEG - 7中的视觉描述工具，分析了特征描述符的应用。
This paper introduces the definition of the content-based image retrieval and the visual description tools of MPEG-7, and analyzes the application of the feature descriptor.
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