The weathering crust eluvial type REE deposits develop widely in southern Hunan.风化壳淋积型稀土矿床,在湘南地区普遍发育.Eluvial tantalite: Eluvial tantalite is found in rubble consisting of fragments and pebbles of varied composition.残积层钽铁...

eluvial的音标：eluvial的英式发音音标为：[ɪ'lju:vɪəl]eluvial的美式发音音标为：[ɪ'ljuvɪrl]...

adj.残积层的...