清华胡广书编的<现代数字信号处理> word 文档-Qinghua Hu Guangshu made the

清华最新字频，做输入法设计重要参考资料。-Tsinghua latest word frequency, making important reference input method design.

陈国安在清华期间的博士后研究报告，主要研究方向是无线通信领域的设备和相关技术的调研-Qinghua Chen-an during the post-doctoral research report, the main research direction is the field of wireless communications equipment and related technology research