可按段落或句子搜索文献
数据统计
相关导航
爱思唯尔
全球性信息分析公司，查文献
BASE
More than 200 mio. scientfic documents from more than 8000 content providers. BASE is one of the world's most voluminous search engines for academic web resources.
国家哲学社会科学文献中心
国家哲学社会科学文献中心
万方
国内知名学术资料查询数据库
PubMed
PubMed® comprises more than 33 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full text content from PubMed Central and publisher web sites.
Semantic Scholar
一款基于机器学习的学术搜索引擎
PubMedPro
PubMed中文版，显示IF
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