niobium怎麽讀
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- niobium英語什麽意思：n.【化學】鈮〔舊名 columbium〕。
- niobium法語什麽意思：音標：[njɔbjɔm]專業辭典n.m.【化學】鈮[第41號元素nb]niobium (nb)m.（41號元素）鈮niobium tapiolitef.方鈮鉭礦
