残积层钽铁矿：残积层钽铁矿发现于由碎片和小鹅卵石成分的碎矿中。

Eluvial tantalite: eluvial tantalite is found in rubble consisting of fragments and pebbles of varied composition.

youdao

残积层钽铁矿：残积层钽铁矿发现于由碎片和小鹅卵石成分的碎矿中。

Eluvial tantalite: eluvial tantalite is found in rubble consisting of fragments and pebbles of varied composition.

youdao