outward diffusion的用法和樣例：
例句
- A pebble tossed into a pond makes an impact, creating a ripple that radiates outward.
將一顆小石頭丟進池塘里，會造成影響，會形成一個向外擴散的漣漪。 - The experiment data proved that this kind of reaction was kinetically controlled and the internal diffusion limitation can be neglected.
提出了攪拌釜中克服外擴散的方法和條件，實驗證明了反應過程為動力學控制，內擴散影響可以忽略。
