1.OALib
OALib provides more than 4,265,438+09,599 open source papers covering all existing disciplines. All articles can be downloaded for free. OALib Journal is an academic journal, mainly used for peer review, covering various fields such as science and technology, medicine, finance and economics, science and humanities and social sciences. All academic articles published in OALib Journal are stored in OALib.
2. World Digital Library
This website mainly provides important raw materials and cultures from all over the world on the Internet in the form of WDL. You can see the customs, human geography around the world, and you can also search for "China".
3. Guo Tu Jinwen
The "Jinwen" search system mainly integrates the digital resources of local libraries and national libraries, and has collected more than 60 resource libraries and more than 200 million pieces of literature information, which has the ability to accommodate massive resources.
Its characteristics should be that it can search relatively complete ancient documents and materials, as well as a professional ancient literature search museum.
4. Online terminology
Terminology Online is sponsored by the National Committee for the Examination and Approval of Scientific and Technological Terminology, and positioned as a terminology knowledge service platform. Searchable terms, with a total of more than 450,000 standardized terms, covering more than 100 disciplines in basic science, engineering and technical science, agricultural science, medicine, humanities and social sciences, military science and other fields.
5. China HowNet Academic Edition
CNKI academic search aims to provide an authoritative platform for domestic and foreign scholars to discover content, including various academic documents, such as periodicals, dissertations, conference papers, newspapers, patents, standards, books and so on.
6. Wan Fang data
Similar to CNKI, the thesis is also relatively complete, but the disadvantage is that it costs more. Similarly, see if your school's library resources have purchased this database, which can be downloaded for free.