Knudsen diffusion
[化] 克努森扩散
🧩 词语组成解析
n. 努森（M·H·C, 1871-1949, 丹麦物理学家）
🗣️ 情景例句
The pay is better and the work is much more interesting.
薪水很高，工作也更有意思。
What is happening down there?
下面发生什么事情？
Ah, it's a secret!
呵，这是个秘密！