学术有哪些信誉好的足球投注网站网址（Academic search URL）.docVIP

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学术有哪些信誉好的足球投注网站网址（Academic search URL）.doc

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学术有哪些信誉好的足球投注网站网址（Academic search URL）

学术有哪些信誉好的足球投注网站网址（Academic search URL） 1, / Although the Beta version, but the individual feel now is nice, Google academic search filter out a lot of junk information in ordinary search results, with different versions of the article and cited by other articles. It is slightly less than the search results, not in accordance with the degree of authority (such as impact factor, citation) in order to search out in China, may be the first few pages for some of the most Chinese journals. 2, Scirus is one of the most comprehensive and comprehensive science and technology literature search engines on the Internet. It is developed by Elsevier Science Press and used for searching periodicals and patents. It works very well! Scirus covers a range of disciplines including agriculture and biology, astronomy, biology, chemistry and chemical engineering, computer science, earth and Planetary Science, economy, finance and management science, engineering, energy and technology, environmental science, linguistics, law, life science, material science, mathematics, medicine, neuroscience, pharmacology, physics. Psychology, social and behavioral science, sociology, etc.. 3, / BASE is a multidisciplinary academic search engine developed by University Libraries in Bielefeld, Germany (Bielefeld), which provides integrated retrieval services for heterogeneous academic resources worldwide. It integrates the library catalogue of the University of Bielefeld Library in Germany and data from about 160 open resources (more than 2 million documents). 4, http://www.vascoda.de/ Vascoda is a prototype of an interdisciplinary portal that focuses on specific topics and integrates library collections, bibliographic databases, and additional academic content. 5, / Compared with Google, found that can search for some of the good things Google search can not. Its interface is simple, powerful and fast, and YAHOO and NetEase have adopted its search technology. You can have a try. 6, Google search engines at the sa