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n.一价；单价
1、divalent and monovalent───二价和一价
2、monovalent───adj.[化学][生物]单价的；[化学]一价的；仅能抵抗某种病菌的
1、At present, study on silver bactericides has mainly focused on nano-silver and monovalence silver compounds, while the bactericidal research on high valence silver compounds is only at starting stage.───目前银化合物抗菌剂研究主要集中于纳米银、一价银化合物，高价银化合物的抗菌研究仅仅处在起步阶段。