“30CrMnSi”可以造什么句，30CrMnSi造句

Study on Technology of Laser Welding of 30CrMnSi Steels

Discussing About Friction and Abrasion Properties of 30CrMnSi Steel

Effect of Pretreatment on Microstructure and Microhardness of 30CrMnSi Treatment Layer by Laser Quenching

Research on 30CrMnSi Pipe Mechanical Expanding, Licking and Tucking Process;

Laser Surface Alloying on 30CrMnSi Electroplated with Ni

Study on Numerical Simulation of Temperature Field on Surface of 30CrMnSi Shafts During Laser Transformation Hardening