权威例句
HTTP: The Definitive GuideUBVRI photometric standard stars in the magnitude range 11.5 < V < 16.0 around the celestial equatorTHE EFFECTS OF ALTERED ARTERIAL TENSIONS OF CARBON DIOXIDE AND OXYGEN ON CEREBRAL BLOOD FLOW AND CEREBRAL OXYGEN CONSUMPTION OF NORM...http://ac.els-cdn.com/S1877050915016270/1-s2.0-S1877050915016270-main.pdf?_tid=9bb09b86-30d9-11e5-b5f7-00000aab0f01&acdnat=143761486...http://main.eulc.edu.eg/eulc_v5/Libraries/Thesis/BrowseThesisPages.aspx?fn=PublicDrawThesis&BibID=11106107