B

名词 b:

1. aerobic rod-shaped spore-producing bacterium; often occurring in chainlike formations; found primarily in soil
   同义词：bacillus
2. originally thought to be a single vitamin but now separated into several B vitamins
   同义词：B-complex vitamin, B complex, vitamin B complex, vitamin B, B vitamin
3. a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder
   同义词：boron, atomic number 5
4. a logarithmic unit of sound intensity equal to 10 decibels
   同义词：Bel
5. (physics) a unit of nuclear cross section; the effective circular area that one particle presents to another as a target for an encounter
   同义词：barn
6. the 2nd letter of the Roman alphabet
   同义词：letter b
7. the blood group whose red cells carry the B antigen
   同义词：type B, group B

b

n.（名词）
【复数】 b`s 或 B`s
The second letter of the modern English alphabet.
B字母：现代英语字母表中的第二个字母
Any of the speech sounds represented by the letterb.
字母b 所代表的读音
The second in a series.
第二：序列中的第二
Music
【音乐】
The seventh tone in the scale of C major or the second tone in the relative minor scale.
B音，B调：C大调音阶中的第七个音或C小调音阶中的第二个音
A key or scale in which B is the tonic.
B键，B阶：以B音为主音调的琴键或音阶
A written or printed note representing this tone.
B调音符：代表B调的书写体或印刷体的音符
A string, key, or pipe tuned to the pitch of this tone.
B调乐器：调至B调音高的弦乐器、琴键或管乐器
A human blood type of the ABO system.
B型血：人类ABO血型系统中的一种
The second best or second highest in quality or rank:
乙等的，乙级的：在质量或等级上次好或次高的：
例句：
a mark of B on an English theme.
英语论文的分数为良好

b
b 2
abbr.Physics （略语）【物理学】
Barn.
Barn.
Or B Bel.
或 B Bel.
Bottom quark.
Bottom quark.