Knudsen number
[化] 克努森数
🧩 词语组成解析
n. 努森（M·H·C, 1871-1949, 丹麦物理学家）
🗣️ 情景例句
What do you think of China?
你认为中国怎么样？
Do you have any goods to declare for customs?
你有任何物品要在海关呈报吗？
Until we are intelligent as to its laws and varieties,
直到我们理解了风俗的规律性和多样性，