Railway Castings, as vital load-bearing elements in railway techniques, have their internal microstructure directly determining the performance and repair existence. Metallographic analysis, by revealing the microstructure properties of resources, offers a immediate foundation for the standard assessment of monitor castings. 1.Complex ways of metallographic Evaluation 1.1 Metallograph... https://followingbook.com/post/557447_with-the-development-of-big-data-the-internet-of-things-and-artificial-intellige.html