音标：[.kwɒdri'veilәnt] ；

a. 四价的
[医] 四价的

a. Having a valence of four; capable of combining with,
being replaced by, or compared with, four monad atoms; tetravalent; --
said of certain atoms and radicals; thus, carbon and silicon are
quadrivalent elements.

词型变化：名词复数形式 : quadrivalents

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abnormal network cause

anterior tentorial pit