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bismuth

資料來源 : pyDict

資料來源 : Webster's Revised Unabridged Dictionary (1913)

Bismuth \Bis"muth\, n. [Ger. bismuth, wismuth: cf. F. bismuth.]
   (Chem.)
   One of the elements; a metal of a reddish white color,
   crystallizing in rhombohedrons. It is somewhat harder than
   lead, and rather brittle; masses show broad cleavage surfaces
   when broken across. It melts at 507[deg] Fahr., being easily
   fused in the flame of a candle. It is found in a native
   state, and as a constituent of some minerals. Specific
   gravity 9.8. Atomic weight 207.5. Symbol Bi.

   Note: Chemically, bismuth (with arsenic and antimony is
         intermediate between the metals and nonmetals; it is
         used in thermo-electric piles, and as an alloy with
         lead and tin in the fusible alloy or metal. Bismuth is
         the most diamagnetic substance known.

   {Bismuth glance}, bismuth sulphide; bismuthinite.

   {Bismuth ocher}, a native bismuth oxide; bismite.

資料來源 : WordNet®

bismuth
     n : a heavy brittle diamagnetic trivalent metallic element
         (resembles arsenic and antimony chemically); usually
         recovered as a by-product from ores of other metals [syn:
          {Bi}, {atomic number 83}]
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