tri·va·lent /(ˌ)traɪˈvelənt/
(a.)三價的
tri·va·lent /(ˈ)traɪˈvelənt/ 形容詞
三價體,三價的
Triv·a·lent a. 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.
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trivalent
adj : having a valence of three