grain refining steel

例句：

1. 1. The grain refining steel is used in the production of high-quality steel products.
   精练钢用于生产高质量的钢材产品。
2. 2. The grain refining steel is widely used in various industries, such as construction and manufacturing.
   精练钢在建筑业和制造业中被广泛使用。
3. 3. The grain refining steel has excellent mechanical properties and can withstand high temperatures.
   精练钢具有优良的机械性能，并能承受高温。