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NB 窄帶 窄帶 Nb n 1: a soft grey ductile metallic element used in alloys; occurs in niobite; formerly called columbium [synonym: {niobium}, {Nb}, {atomic number 41}] 2: a Latin phrase (or its abbreviation) used to indicate that special attention should be paid to something; "the margins of his book were generously supplied with pencilled NBs" [synonym: {nota bene}, {NB}, {N.B.}] |
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