短語詞組短語magnetic pipe recording medium 磁性錄音體Perpendicular Magnetic Recording Medium 垂直磁記錄介質(zhì)magnetic recording medium material 磁記錄介質(zhì)材料magnetic recording medium materials 磁記錄介質(zhì)材料non -magnetic recording medium 非磁記錄媒體Magnetic recording medium manufacturing method 發(fā)明名稱 返回 magnetic recording medium