niobium

/nai'әubiәm/

现代语料频率: 39644

n. 铌

[化] 铌Nb

n. a soft grey ductile metallic element used in alloys; occurs in niobite; formerly called columbium

Pertaining to, or containing, columbium or niobium; niobic. a

n a black mineral that is an ore of niobium and tantalum

n a former name for niobium

A rare mineral, containing chiefly niobium, titanium, thorium, and cerium

It contains niobium, titanium, yttrium, and uranium, with some other metals.

今日更新

更新时间：2025-06-17 16:25:06