nb

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