identity (EN)

名词

名词 “identity”

1. 身份特征
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   After moving to a new country, she struggled to maintain her cultural identity.
2. 同一性
   The identity of these two samples required laboratory testing.
3. 面具（用于比喻一个人对外展示的形象）
   He assumed a false identity to escape from the police.
4. 恒等式
   In trigonometry, sin^2(x) + cos^2(x) = 1 is a fundamental identity.
5. 恒等函数
   The identity function in programming simply returns the value that was passed as an argument.
6. 单位元（在特定运算中与另一元素结合后不改变该元素的数学元素）
   In matrix multiplication, the identity matrix leaves other matrices unchanged when it is used as a multiplier.