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nb
英汉字典
英英字典
解释
窄带;
同义
nb
niobium
atomic number 41
词性
n
解释
a soft grey ductile metallic element used in alloys; occurs in niobite; formerly called columbium
示例
None
同义
n.b.
nb
nota bene
词性
n
解释
a Latin phrase (or its abbreviation) used to indicate that special attention should be paid to something
示例
the margins of his book were generously supplied with pencilled NBs