それが何であるか
A solid-solution series: niobium-rich at one end, tantalum-rich at the other. Source of both metals, and a designated conflict mineral.
鉱石鉱物
A solid-solution series: niobium-rich at one end, tantalum-rich at the other. Source of both metals, and a designated conflict mineral.
A solid-solution series: niobium-rich at one end, tantalum-rich at the other. Source of both metals, and a designated conflict mineral.
