Railway Castings, as vital load-bearing elements in railway techniques, have their internal microstructure straight determining the overall performance and repair daily life. Metallographic Evaluation, by revealing the microstructure characteristics of products, gives a immediate basis for the standard assessment of observe castings. one.Complex ways of metallographic Examination one.... https://www.bondhuplus.com/post/954416_with-the-development-of-big-data-the-internet-of-things-and-artificial-intellige.html