这种大规模巨厚的贫铁矿层中还含有优质的鞍山式富铁矿。

There is a high quality Anshan type ferrian deposit in the large, thick, poor iron ore beds.

youdao

这种大规模巨厚的贫铁矿层中还含有优质的鞍山式富铁矿。

There is a high quality Anshan type ferrian deposit in the large, thick, poor iron ore beds.

youdao