学科分类与代码GBT_13745-2009.pdf是图片格式 学科分类与代码GBT_13745-2008.doc文字版,应该是个讨论版,不过和2009很接近了. 学科分类.mdb,设置好Pid的表,可以直接使用. -Classification and code of discipline is the image format GBT_13745-2009.pdf subject classification and code GBT_13745-2008.doc text ver

云鹏《矩阵论》第二版的习题精解和同步辅导，作者张凯院、徐仲。 文字版，非扫描。-Solutions for Cheng Yunpeng, Matrix Theory 2nd. Author: Zhang Kai homes, XU Zhong. Text version, non-scanning.