quad.ri.va.lent
adj.Chemistry （形容词）【化学】 Having four valences.四价的：具有四个化学价的Having a valence of four; tetravalent.四价的；四个原子价的
【引伸】
quad.riva.lence 或
quad.riva.lency
n.（名词）
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quadrivalent 音标[,kwɒdri'veilәnt] quadrivalent09-07
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