| 单词 | 映成 |
| 释义 | 〔bijection〕A function that is both one-to-one and onto.双射：一对一且映成的函数〔onto〕Of, relating to, or being a mapping such that every element of the set referred to is the image of an element in another.映成的：一集合中的每一元素，经映象后为另一集合至少一元素的象的；与之有关的；或成为象的 |
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