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Heptavalent

資料來源 : pyDict

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

Heptavalent \Hep*tav"a*lent\, a. [Hepta- + L. valens, p. pr. See
   {Valence}.] (Chem.)
   Having seven units of attractive force or affinity; -- said
   of heptad elements or radicals.
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