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
How soon will my mail be received by the other end?
我的信件多快能被对方收到？
There is no going heaven in a sedan.
坐轿上天堂，从来无此事。
The IBM PC386 will be big enough for us.
而IBM386对我们来说就够大的了。