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
We all need one of those.
我们都需要一个这样的领结。
What school did you go to?
你在哪里上学？
Bring the picnic basket up here, under this big tree, said Ann.
“把野餐篮子拿到这儿来，放在这棵大树下，”安说。