Identity operator
单位算子
🧩 词语组成解析
identity
[ai'dentiti]
n. 身份;[逻]同一性;个性;[数]恒等（式）;
🗣️ 情景例句
They are not personal or private.
并不是私人的问题。
When did I say that?
我什么时候说过了？
I'm supposed to go on a diet.
我应该节食。