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beta    音标拼音: [b'etə]
n. 贝它,希腊字母的第二个字母

贝它,希腊字母的第二个字母

beta
贝他

beta
adj 1: second in order of importance; "the candidate, considered
a beta male, was perceived to be unable to lead his party
to victory"
2: preliminary or testing stage of a software or hardware
product; "a beta version"; "beta software"
n 1: the 2nd letter of the Greek alphabet
2: beets [synonym: {Beta}, {genus Beta}]

Beta \Be"ta\, n. [Gr. bh^ta.]
The second letter of the Greek alphabet, B, [beta]. See {B},
and cf. etymology of {Alphabet}.

Note: Beta (B, [beta]) is used variously for classifying, as:
(a) (Astron.) To designate some bright star, usually the
second brightest, of a constellation, as, [beta]
Aurig[ae].
(b) (Chem.) To distinguish one of two or more isomers; also,
to indicate the position of substituting atoms or groups
in certain compounds; as, [beta]-naphthol. With acids, it
commonly indicates that the substituent is in union with
the carbon atom next to that to which the carboxyl group
is attached.
[Webster 1913 Suppl.] Betacism

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