用户还可以部署XQuery来检索那些评价最好且单价低于平均价格的计算机图书。

Users can also employ XQuery to retrieve the list of computer books that have the best reviews and are cheaper than the average price.

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我们开展的系统评价是利用PubMed和EMBASE检索1987年1月1日至2007年9月1日出版的各种语言的经同行评议的相关文献。

We conducted a systematic review of the peer-reviewed literature published from 1 January 1987 to 1 September 2007 in all languages using PubMed and EMBASE.

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结果发现，有近三分之一的期刊没有严格执行《中国学术期刊(光盘版)检索与评价数据规范》，共有3136条文献著录错误，有错误18930处。

It shows that about one-third of periodicals don't conform to Data norm for retrieval and evaluation of Chinese Academic Journal (CD) and there are incorrect 3136 references with 18930 faults.

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