Density operator
[化] 密度算符
🧩 词语组成解析
🗣️ 情景例句
Don't worry about it. It's a taken of my appreciation for your business, and friendship.
没关系的。这是向你表示我们在生意及友谊上的一点心意。
A bird in the hand is worth two in the bush.
双鸟在林不如一鸟在手。
They told us to go home but we went on.
他们要我们回家去，可我们继续行进。