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
I made a pig of myself.
我吃得像一头猪！
John would like to touch some of the sculpture in the art gallery.
约翰想触摸几件美术馆的雕刻。
Who was second? Who was third?
谁是第二？谁是第三？