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C4H4

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

Tetrol \Tet"rol\, n. [Tetra- + benzol.] (Chem.)
   A hypothetical hydrocarbon, {C4H4}, analogous to benzene; --
   so called from the four carbon atoms in the molecule.

   {Tetrol phenol}, furfuran. [Obs.]
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