粉末冶金高速钢 PMHSS ; powder metallurgy superalloy ; PM-HSS

粉冶高速工具钢 PMHSS

于它的粉末冶金高速钢 powder metallurgy High speed steel ; PM-HSS

冶金高速钢 low-alloyed high speed steel

于它粉末冶金高速钢 powder metallurgy High speed steel