像，像点函数中与某一集合中特定变量相对应的变量
A set of values of a function corresponding to a particular subset of a domain.
函数两组元素一一对应的规则，第一组中的每个元素在第二组中只有唯一的对应量
A rule of correspondence between two sets such that there is a unique element in the second set assigned to each element in the first set.
波长光、热或其它能量波的一个波峰或波谷与下一个对应的波峰或波谷之间的距离
The distance between one peak or crest of a wave of light, heat, or other energy and the next corresponding peak or crest.
手指，足趾其它脊椎动物相对应的部位
A corresponding part in other vertebrates.
