资料来源 : pyDict

字母B

资料来源 : Webster's Revised Unabridged Dictionary (1913)

B \B\ (b[=e])
   is the second letter of the English alphabet. (See Guide to
   Pronunciation, [sect][sect] 196, 220.) It is etymologically
   related to p, v, f, w and m, letters representing sounds
   having a close organic affinity to its own sound; as in Eng.
   bursar and purser; Eng. bear and Lat. ferre; Eng. silver and
   Ger. silber; Lat. cubitum and It. gomito; Eng. seven,
   Anglo-Saxon seofon, Ger. sieben, Lat. septem, Gr."epta`,
   Sanskrit saptan. The form of letter B is Roman, from Greek B
   (Beta), of Semitic origin. The small b was formed by gradual
   change from the capital B.

   Note: In Music, B is the nominal of the seventh tone in the
         model major scale (the scale of C major ), or of the
         second tone in it's relative minor scale (that of A
         minor ) . B[flat] stands for B flat, the tone a half
         step, or semitone, lower than B. In German, B stands
         for our B[flat], while our B natural is called H
         (pronounced h["a]).

资料来源 : WordNet®

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

资料来源 : Free On-Line Dictionary of Computing

B
     
        1. {byte}.
     
        2.  A systems language written by {Ken Thompson} in
        1970 mostly for his own use under {Unix} on the {PDP-11}.  B
        was later improved by Kerninghan(?) and Ritchie to produce
        {C}.  B was used as the systems language on {Honeywell}'s
        {GCOS-3}.
     
        B was, according to Ken, greatly influenced by {BCPL}, but the
        name B had nothing to do with BCPL.  B was in fact a revision
        of an earlier language, {bon}, named after Ken Thompson's
        wife, Bonnie.
     
        ["The Programming Language B", S.C. Johnson & B.W. Kernighan,
        CS TR 8, Bell Labs (Jan 1973)].
     
        [Features?  Differences from C?]
     
        (1997-02-02)
     
        3.  A simple interactive programming language by
        Lambert Meertens and Steven Pemberton.  B was the predecessor
        of {ABC}.
     
        {(ftp://ftp.uni-kl.de/pub/languages/B.tar.Z)}.
     
        ["Draft Proposal for the B Language", Lambert Meertens, CWI,
        Amsterdam, 1981].
     
        4.  A specification language by
        Jean-Raymond Abrial of {B Core UK}, Magdalen Centre, Oxford
        Science Park, Oxford OX4 4GA.  B is related to {Z} and
        supports development of {C} code from specifications.  B has
        been used in major {safety-critical system} specifications in
        Europe, and is currently attracting increasing interest in
        industry.  It has robust, commercially available tool support
        for specification, design, proof and code generation.
     
        E-mail: .
     
        (1995-04-24)

b
     
        {bit} or maybe {byte} (B).
     
        (1996-11-03)