“20CrMnTi”造句，怎麼用20CrMnTi造句

Method for reducing black structure in 20CrMnTi steel after carburizing and quenching

Effects of intensive quenching on microstructure and mechanical properties of 20CrMnTi steel

Study of the Obdurability of 20CrMnTi Cutting Picks Treated by Lye Quenching after Hard Soldering

Study on the repairing processing of the excessive carbide of 20CrMnTi gears

Ostwald Ripening of Ti(C,N) in 20CrMnTi Gear Steels