Identity matrix
[计] 单位矩阵, 恒等矩阵
🧩 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 always cry at weddings.
我在婚礼上老是哭。
What did you do the week before last?
上上星期你干了什么？
It's nothing serious.You'd better have a good rest.
（病情）不太严重。你最好好好休息一下。