answering document retrieval
automatic document retrieval system
cross-hospital clinical document retrieval
cross-language similar document retrieval
document document similarity matrix
Document retrieval
信息检索
文献检索
文件检索
文件检复
文档检索
文件调阅
情报检索
文献分布
document retrieval index
document retrieval subject
document retrieval system
office document retrieval system
on-line document retrieval system
spoken document retrieval SDR
Digital Bibliographic Retrieval Course
Information retrieval course
literature retrieval course
Literature retrieval course teaching
course selection of the public P.E course
exploration course [= exploratory course]