短语词组短语fine -grained australia rich ore s 细粒澳富粉fine particles Pb -Zn ore 细粒铅锌矿fine refractory hematite -limonite ore 细粒难选赤褐铁矿Micro -fine magnetite ore 微细粒嵌布磁铁矿Super -fine lean hematite ore 超微细贫赤铁矿 返回 fine ore