1)one to many mapping,一对多映射2)many-one mapping,多一映射3)one-to-one mapping,一对一映射(映照)4)two-to-one maps,二对一映射5)one-to-many mapping,一对多映象6)bijective map,一一对应的映射
用法例句
In this paper, we show that hyperovals are very closely related to two-to-one maps, and then we proceed to generalize Maschietti s result.