短語詞組短語Backing Storage Device 儲存設(shè)備backing off device 后退裝置backing up device 備份設(shè)備floating head backing device 浮頭鉤圈;浮頭勾圈;翻譯backing device info 使用為每個塊設(shè)備S -floating head with backing device 鉤圈式浮頭 返回 backing device