In the present case, the items being searched are documents that are described both by metadata and content, but the basic user interface is the same as in the e-commerce case.
目前情况下，要搜索的项是通过元数据和内容共同描述的文档，但是基本用户界面与电子商务应用程序相同。
For example, for the typical e-commerce site there are four (at least) basic use cases.
例如，对于典型的电子商务站点，有四个(至少)基本用例。
This paper introduces the basic concepts of SET, the primary technologies involved and the running procedure, at the same time it analyses how SET implement the security of e - commerce.
这里详细介绍了SET的基本概念、所使用的主要技术以及运行的过程，同时分析了SET是怎样解决网上交易安全性的。
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