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trivalent a. 三價的 三價的 trivalent adj 1: having a valence of three Trivalent \Triv"a*lent\, a. [Pref. tri- L. valens, -entis, p.
pr. See {Valence}.] (Chem.) Having a valence of three; capable of being combined with, substituted for, or compared with, three atoms of hydrogen; -- said of triad atoms or radicals; thus, nitrogen is trivalent in ammonia. [1913 Webster]
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