| 1. | Meta search engine can gain larger one and avoid repetitive queries to different single search engines by integrating them
相反的，元搜索引擎是通过集成多今独立搜索引擎的方法来扩大检索覆盖面，避免重复查询的。 |
| 2. | Single search engine which provides some service distributed in different fields still is applied widely because its completion is relatively easy , and was created too much since it first appeared
独立搜索引擎相对容易实现，在早期设立较多，分布在不同领域、不同地方为用户提供服务，在当前的应用仍然是最广。 |
| 3. | We will take meta search engine as research object and design improved one on the base of analyzing the current virtues and shortcomings of single search engine , meta search engine and distributed retrieval theory , taking science literature retrieval as an example
本文选择元搜索引擎为研究对象，在分析独立搜索引擎、元搜索引擎、分布式搜索方案的现实优缺点基础上，以科技文献检索为例，设计了一种改进型元搜索引擎。 |
| 4. | Users only need to submit search requirements once , it is the responsibility of the meta search engine to transform , process and hand over the requirements to multiple pre - selected independent search engines , then present the search results in a uniform format to users
用户只需递交一次检索请求，由元搜索引擎负责转换处理后提交给多个预先选定的独立搜索引擎，并将所有查询结果集中起来以整体统一的格式呈现到用户面前。 |
| 5. | Contrasting with single search engine , meta search engine have n ' t it ' s own database and have no need to collect or store webpage , so it can pay more attention to the selection of single search engine and the optimization of search queries and results
相对于独立搜索引擎，元搜索引擎一般没有自己独立的数据库，这就省去了收集和存储网页、建立和存储索引的工作，从而把工作重心放在搜索引擎的选择、检索请求的优化和检索结果的优化上。 |
| 6. | Meta - searchengine is regarded as search engine based on search engines . users only need to submit search requirements once , it is the responsibility of the meta - searchengine to transform , process and hand over the requirements to multiple pre - selected independent search engines , then present the search results in a uniform format to users
元搜索引擎是一种建立在独立搜索引擎之上的搜索引擎。用户只需要递交一次检索请求,由元搜索引擎负责转换处理后提交给多个预先选定的独立搜索引擎,并将搜索查询结果集中起来以整体统一的格式呈现到用户面前。 |
| 7. | This thesis introduces the developing history of search engine and meta search engine ; discusses the working principle of meta search engines and classify them ; compares the strong points of meta search engine with search engine ; it also discusses several key technology of meta search engine , and analyses the problems and trend of meta search engine in the future
本文介绍了搜索引擎和元搜索引擎的发展历史，讨论了元搜索引擎的基本工作原理并对元搜索引擎进行了分类，比较了元搜索引擎与独立搜索引擎相比的优点，讨论了元搜索引擎的几个关键技术，并分析了元搜索引擎面临的问题和将来的发展趋势。 |
| 8. | Increase speed and special structure of web information make some difficulties in its retrieval . search engine is becoming an independent tool now after developed from simple robot search software , single search engine to specialized search engine and meta search engine since it came into being to play up to people " s requirements
搜索引擎( searchengine )应人们的迫切需求出现以后，经历了从简单的机器人搜索软件( robotsearchsoftware ) 、独立搜索引擎( singlesearchengine )到专业搜索引擎( specializedsearchengine ) 、元搜索引擎( metasearchengine )的发展历程，成为人们在web上寻找信息不可或缺的工具。 |
