20Cr造句怎么写

Preliminary Investigation on Austenitic Nitriding and Intermediate Temperature Tempering for 20Cr Steel

Study on Optimizing the Tecnics of the Super Saturation Carburization on 20Cr Steel and a New Stype Super Saturation Carberization Steel;

Cyclic Oxidation Behavior of Ni-20Cr Alloy Prepared by Mechanical Alloying

Solid-Phase Reaction and Microstructure of Interface of 3D Meshy SiC_n/20Cr Steel Composite

Surface combined treatment of carbonitriding and B-C-N-RE multi-elements deep-penetrating on 20Cr steel firebrick die