Tracer diffusion
[化] 示踪原子扩散
🧩 词语组成解析
tracer
['treisə]
n. 追踪者，描图者，（铁笔等）绘图工具;
🗣️ 情景例句
Without a doubt, things will get worse.
情况无疑会越来越糟。
How many pieces are you going to take?
你要拿几支？
The reason lies in its gravity.
其原因在于月球的重力。