pearlitic iron

例句：

1. 1. The steel industry heavily relies on the extraction of phosphorus and iron from phosphate rocks.
   钢铁工业严重依赖从磷酸盐岩石中提取磷和铁。
2. 2.The use of this material is limited due to its high cost and low availability.
   由于成本高昂且供应有限，这种材料的使用受到限制。
3. 3.The research team has discovered a new method for extracting these valuable minerals.
   研究小组发现了一种提取这些宝贵矿物的新方法。