quadrivalent element四价元素;四价元素四价元素
quadrivalent anion四价阴离子
quadrivalent cerium四价铈
quadrivalent atom四价原子
quadrivalent derivative四价衍生物
quadrivalent derivate四价衍生物
quadrivalent chromosome四价染色体
quadrivalent cation四价阳离子
quadrivalent association四价染色体配对
ADJ(形容词) [chem] → same as tetravalent