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1·From the two aspects of recall and precision ratio, the three algorithms are compared.

文章从查全率和查准率两个角度，对三种算法进行比较。

2·The precision ratio of solvent was confirmed, and feasible spread solvent was selected.

确定了溶剂的精确配比，选择了适宜的展开剂。

3·The experiment results show that this focused-spider can raise the precision ratio greatly.

实验结果显示，该主题蜘蛛能有效提高查准率。

4·It provides an essential condition for the research on the relations between recall ratio and precision ratio.

为进一步研究查全率与查准率的关系提供了必要的条件。

5·Experiment results show that this method can improve precision ratio to a certain extent, but recall ratio greatly.

实验表明，该方法会有效提升查全率并且会改进查准率。

6·The experimental results indicate that the precision ratio of keywords retrieval can be improved by using this method.

实验结果表明，该方法能够有效提高关键字检索结果的查准率。

7·Retrieval performance includes evaluation of recall ratio, precision ratio, speed of retrieval, cost and convemence etc.

检索性能主要包括查全率、查准率、检索速度、费用与方便性等指标。

8·The article discusses several guidelines evaluating search engine such as recall ratio, precision ratio and response time;

探讨了评价搜索引擎的几个指标，如查全率、查准率、响应时间等；

9·The experimental results show that the proposed approach improves the recall and precision ratio of the information retrieval.

实验结果表明，该方法在检索的查全率和查准率方面都有很大的提升。

10·Assemble model can draw components of retrieval system precisely, it can also be used to account recall ratio, and precision ratio.

集合模型能够精确地描述检索系统的构成，还可以用来计算检索的查全率和查准率。