方法复习2 1例的全部病历，组织切片，总结其特点。
Methods:Review all cases and histopathological slices of 21 patients with olfactory neuroblastoma and study their characters.
论文介绍了一种新型的搜索引擎——中华搜索宝，在总结其特点的基础上论述了其在个人数字图书馆和虚拟图书馆建设过程中的可能应用。
This paper introduces a new search engine-CHINASSB, summarizes its characteristics, discusses its application in the construction of personal digital libraries and virtual libraries.
本文第四章首先对张弦桁架结构的自振特性进行了分析，对其自振频率和振型的特点进行了总结。
In this paper, the natural characteristics of TSS will be analyzed firstly, and then the peculiarity of its frequency and vibration will be summarized.
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