TiO2改性的Al2O3
TiO2-modified alumina carrier
Swenson改良法
Improving swenson’s procedure
SS9改型机车
type SS9 modified locomotive
SS4改型机车
type SS4 modified locomotive
RTG油改电
electricity changed from oil in RTG
O改性的Mo 100
O modified Mo 100 surfaces
LJP组合式电改袋技术
LJP sectional electric-to-bag-dust-collection tech
Knoevenagel—Dobner改良法
modification of Knoevenagel-Dobner
KBM磨内改造技术
KBM in-mill reconstruction technology