台湾国立中央大学的HHT变换程序，试过了很好用的！欢迎下载-Taiwan National Central University of HHT transform procedure, tried a very good use! Welcome to download

TWTB编的PLC程序，有注解，供爱好者参考，谢谢。(TWTB series of PLC procedures, notes, for lovers reference, thank you.)