parallel retrieval造句

parallel retrieval algorithm of information based on vector space model
基于协同过滤的在线拍卖商品推荐
research and practice of parallel retrieval balanced auto-adapted mechanism in search engine
搜索引擎中并行检索均衡自适应机制的研究与实践
It's difficult to find parallel retrieval in a sentence. 用parallel retrieval造句挺难的