ball iron

• 粒铁

ball iron的用法和样例：

例句

1. The technology of using decarburized iron is mentioned for reference.Some cases of using decarburized iron in Chinese plants are briefed.
   提出了使用脱碳粒铁的参考工艺，介绍了几家国内电炉钢厂使用脱碳粒铁的情况。