能将各种格式的文本，图形，转换为pdf格式文件保存，虚拟打印机程序-This is a virtual printer program, it can convert many formats of text files, images into PDF format files and save to disk.

能将各种格式的文本，图形，转换为pdf格式文件保存，虚拟打印机程序-This is a virtual printer program, it can convert many formats of text files, images into PDF format files and save to disk.

智能化车牌识别系统研究.ppdf，这可是花银子才下来的哦 -Intelligent License Plate Recognition System. Ppdf, this is to spend money down, oh