Bivalent
[bai'veilәnt]
解释:
(adj.) used of homologous chromosomes associated in pairs in synapsis .
(adj.) having a valence of two or having two valences .
卡尔顿手打--From WordNet
解释:
(p. pr.) Equivalent in combining or displacing power to two atoms of hydrogen; dyad.
杰弗里校对