| 单词 | 恒等 |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔additive identity〕An identity element that in a given mathematical system leaves unchanged any element to which it is added.加性恒等式：在特定的数学系统中与任何元素相加都不变的单位元素美国传统〔identity〕An equation that is satisfied by any number that replaces the letter for which the equation is defined.单位（矩）阵：定义式中的字母对任一数字都使恒等式成立的恒等式美国传统 |
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