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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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