On DOS systems,there are ordinary boot-sector viruses,which infect only the DOS boot sector,and MBR viruses which infect the Master Boot Record on fixed disks and the DOS Bootsector on diskettes.是什么意思_On DOS systems,there are ordinary boot-sector viruses,which infect only the DOS boot sector,and MBR viruses which infect the Master Boot Record on fixed disks and the DOS Bootsector on diskettes.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句