adj.单价的；仅能抵抗某种病菌的
A monovalent vaccine;a monovalent serum. 单抗原疫苗；单抗原血清
A sufficient concentration of monovalent ions, such as ??l, can bring about coagulation in this way. 足够浓的一价离子象??l能够以这种方法引起凝聚。
Halogen atoms contain seven electrons in their valence shell, and, consequently, are monovalent. 卤原子在它们的价电子层含有七个电子，因此是一价的。
A monovalent radical,such as ethyl or propyl,having the general formula CnH2n+1. 烷基，烃基一种单价基，如乙烷基和丙基，分子式为CnH2n＋
A monovalent radical, such as ethyl or propyl, having the general formula CnH2n+1. 烷基，烃基一种单价基，如乙烷基和丙基，分子式为cnh2n＋1
