commercial iron

例句：

1. 1. The company's new product line is designed to meet the needs of modern commercial iron.
   该公司的新产品线旨在满足现代商业钢铁的需求。
2. 2. The industrial revolution led to the development of new techniques for extracting and processing commercial iron ore.
   工业革命推动了提取和加工商业铁矿石新工艺的发展。
3. 3. The use of high-quality commercial iron in construction has significantly improved building efficiency.
   在建筑中使用高质量的商业钢铁显著提高了建筑效率。