b
美[biː] 英[biː]
n. 字母B；第二；B调；乙等；像字母B的东西
详细释义
n.(名词)- 英语字母中的第二个字母，小写为b
- 乙等，良好
- 【数】第二，乙
- 第二已知数
- 硼
- B音，（音乐中）B调
- B的活字或印刷体
- 表示第二的符号
- 样子像字母B的东西
英英释义
Noun- aerobic rod-shaped spore-producing bacterium; often occurring in chainlike formations; found primarily in soil
- originally thought to be a single vitamin but now separated into several B vitamins
- a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder
- a logarithmic unit of sound intensity equal to 10 decibels
- (physics) a unit of nuclear cross section; the effective circular area that one particle presents to another as a target for an encounter
- the 2nd letter of the Roman alphabet
- the blood group whose red cells carry the B antigen
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