结果表明，研制开发出的铌钛微合金化if钢具有高的屈服强度和优良的成形性能。

The results show that the steel has high yield strength and quality forming property.

youdao

结果表明，研制开发出的铌钛微合金化if钢具有高的屈服强度和优良的成形性能。

The results show that the steel has high yield strength and quality forming property.

youdao