最后对系统的主要页面、数据库、应用程序的设计与实现作了较为详细的讲解。
At last, this article minutely explains the design and realization of Web page layout, data base and application program of our system.
网站地图的三大因素：文本、连结、关键词，都极其有利于搜寻引擎抓取主要页面内容。
Site Map of the three major factors: the text, links, key words, are extremely beneficial to the search engines crawl the main page content.
在图1中，装载主要页面所用的时间是516毫秒(ms)，但是装载所有东西并显示整个页面所用的时间是5101 ms。
In Figure 1, the main page took 516 milliseconds (ms) to load, but it was 5101 ms before everything was loaded and the entire page could be displayed.
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