manganiferous iron ore 含锰铁矿

manganiferous white cast iron 含锰白口铸铁

manganiferous ore 含锰矿石

manganiferous formation 含锰建造

manganiferous limestone 含锰灰岩

manganiferous rock series 含锰岩系

manganiferous by-product 含锰废料

manganiferous ore processing 锰矿加工

manganiferous sedimentary formation 含锰沉积建造