Railway Castings, as key load-bearing components in railway units, have their internal microstructure instantly analyzing the general performance and repair life. Metallographic Examination, by revealing the microstructure properties of materials, offers a immediate basis for the standard evaluation of observe castings. one.Complex ways of metallographic Investigation 1.1 Metallograph... https://social.kubo.chat/post/239995_with-the-development-of-big-data-the-internet-of-things-and-artificial-intellige.html