化文字索引 Automatic Text Indexing
英文字母索引 Alphabetical Index
上下文关键字索引 keyword-in-context index
文字与语言索引 literary and linguistic index ; [语] literal-and-linguistic index
上下文外关键字索引 key-word-out-of-context index
上下文内关键字索引 key-word-in-context index
文字值索引 indexing with literal values
本文外关键字索引 key-word-out-of-context index
其实，把视频里的音轨用语音识别转化成文字索引并时间编码的技术已经有了。
The technology for converting the audio tracks of video via speech recognition to plain text indexed to time-code has been around for a while.
例如，当索引Web页面时，储存某个关键词的额外信息可能会很有用，例如这个关键词关联的URL或者经过文字分析后得出的权重系数。
For instance, when indexing web pages, it may be useful to store extra information about a particular word, such as an associated URL or weighting factor based on some analysis of the text.
(z索引的)层次数目也是很重要的，这些层可以放在Web页面上用于调整扩展文字和更密集图形图像的溢出。
Also important is the number of layers (Z-index) that can be placed on a Web page to accommodate the overflow of the expanded text and more intensive graphic images.
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