A preliminary study of the ghost with metal materials on MR imaging DAI Yongyu, GAO Peiyi. Departmenr of Stomatology, Beijing Hospital, Beijing是什麼意思_A preliminary study of the ghost with metal materials on MR imaging DAI Yongyu, GAO Peiyi. Departmenr of Stomatology, Beijing Hospital, Beijing在線翻譯_英語_讀音_用法_例句