quiet steel

• 软钢,全脱氧钢,全镇静钢

quiet steel的用法和样例：

例句

1. The carbon content of mild steel is much lower than cast-steel.
   软钢的含碳量要比铸钢的低得多。
2. Mild steel is usually used for general engineering purposes.
   软钢通常用在一般工程上。