Mazda first released the new domestic models "Mazda6 Atenza Atez" and "Mazda3 Axela Angkorra." The two new models are Mazda's new-generation products that fully adopt the new generation "Chuangchi Blue Sky" technology and the new "Soul Moving" de
The material of the large gear does not conform to the alloying element composition of the 20CrNi2MoA steel grade (especially the content of Ni is insufficient), and it is more in line with the alloying element composition of the 20CrMo steel. The detected fracture material composition is compared