viscous flow的用法和樣例：
例句
- "A science fiction cannot not be regarded as a mere entertainment, but in fact it tells the reader much more."
"科幻小說不能簡單地看成是供消遣的，而實際上它給讀者展示更深刻的內容。" - The gas permeation mechanism through carbon membrane is involved in Knudsen diffusion and viscous flow.
氣體透過炭膜的擴散以努森擴散為主，並伴有粘性流。
