The main websites of literature retrieval are China Knowledge Network, Wan Fang Data, National Digital Library and National Science and Technology Library.
1, China hownet
China HowNet Knowledge Discovery Network Platform-provides domestic and foreign readers with unified retrieval, unified navigation, online reading and downloading services for China academic literature, foreign literature, dissertations, newspapers, conferences, yearbooks, reference books and other resources.
2. Wan Fang data
Introduction: Wan Fang Data integrates hundreds of millions of high-quality global academic resources, and integrates more than ten kinds of resources such as periodicals, degrees, conferences, scientific reports, patents, videos, etc., covering all research levels, perceiving users' academic background, and searching intelligently for them. Wanfang Zhisou is committed to helping users accurately discover, acquire and precipitate academic essence.
3. China National Digital Library
Introduction: The National Library of China jointly launched the "Digital Library Mobile Reading Platform" with a number of public libraries. This platform is located in mobile reading, which brings together more than 40,000 kinds of e-book resources, thousands of electronic periodicals and high-quality characteristic digital resources of local library substations to provide users with free reading experience anytime and anywhere. Welcome readers to visit and use.
4. National Science and Technology Library
The National Library of Science and Technology (NSTL) is a virtual sci-tech literature information service organization established on June 6th, 2000 according to the instructions of the State Council. Its members include the Literature Information Center of China Academy of Sciences, the Engineering Technology Library, the Library of China Academy of Agricultural Sciences and the Library of China Academy of Medical Sciences.
Online institutions include China Institute of Standardization and China Institute of Metrology. The center has an office, which is responsible for the organization, coordination and management of the construction and sharing of scientific and technological literature information resources.