说明：  书名“全能混合电路仿真 OrCAD PSpice A-D V9”，Orcad pspice仿真方面的书籍，9.0版本，非常不错，还有一本因容量较大缺乏上传信心
(title, "all mixed circuit simulation OrCAD PSpice A-D Blast" Orcad PSPICE simulation of books, Version 9.0, very good. there is a greater capacity for lack of confidence Upload)