並前往https://zhidao.baidu.com/index/?word=%E8%B0%81%E6%9C%89%E9%AB%98%E7%AD%89%E5%B7%A5%E7%A8%8B%E6%95%B0%E5%AD%A6%20Erwin%20Kreyszig%20%E4%B8%AD%E6%96%87%E7%89%88%E5%95%8A%EF%BC%81%20%E6%80%A5%E6%B1%82%EF%BC%81%20%E5%B8%8C%E6%9C%9B%E6%98%AF%20PDF%20%E6%88%96%E6%98%AF%E7%94%B5%E5%AD%90%E4%B9%A6%20%E8%B0%A2%E8%B0%A2%E5%95%8A&from=qb&ad_test=&esqb_20per=1&Ycai_hit=205&uid=F469D5BBCD721C0C9F76E8AD30DB70A5&step=1