Ferrite and carbon constitute the mild steel.

铁素体和碳组成低碳钢。

Mild steel is usually used for general engineering purposes.

软钢通常用在一般工程上。

Stainless steel has a greater elastic springback than mild steel.

不锈钢的弹性反冲比低碳钢要强。

Make a Mobius strip out of a ribbon of mild steel and magnetise it.

用一根软钢条做成麦比乌斯带，将其磁化。

Mild steel has a high tensile strength, this being 200 times that of concrete.

低碳钢具有很高的抗拉强度，大约是混凝土的抗拉强度的200倍。