“high chromium steel”可以造什么句，high chromium steel造句

2、For improving thermal efficiency, the mechanical properties of newly high chromium steels were tested and studied.

1、The effects of granulation process on the microstructure and properties of high chromium steel for rolls were studied.

3、Some high chromium steels can be hardened by heat treatment and are used where resistance to wear, abrasion, and corrosion are required.