A preliminary study of the ghost with metal materials on MR imaging DAI Yongyu, GAO Peiyi. Departmenr of Stomatology, Beijing Hospital, Beijing是什么意思_A preliminary study of the ghost with metal materials on MR imaging DAI Yongyu, GAO Peiyi. Departmenr of Stomatology, Beijing Hospital, Beijing在线翻译_英语_读音_用法_例句