niobite

"niobite" Chinese translation ("niobite" in Chinese, "niobite" 中文翻译, "niobite"发音):

niobite n. 铌铁矿 (天然产,灰黑或棕黑色,有光泽的矿物) [n. 铌铁矿 (天然产,灰黑或棕黑色,有光泽的矿物) ]