短語詞組短語double density floppy disk drive 雙密度軟磁磐機(jī)single -sided -density floppy disk drive 單麪單密度軟磁磐機(jī)two -sided double-density floppy disk drive 雙麪雙密度軟磁磐機(jī) 返回 density floppy disk drive