英语语法分析

Test of cold rolling welded ferritic stainless steel strip was carried out.

对铁素体不锈钢带焊接冷轧技术进行了试验研究。

Structural steels, Carbon content. Low-alloy steels. Ferritic and martensitic stainless steels.

结构钢，碳钢，低合金钢，鉄素体和马氏体不锈钢。

This article gives the direction to produce and apply ultra pure ferritic stainless steel in China.

指出了我国在超纯铁素体不锈钢生产和应用方面今后努力的方向。