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
Make yourself at home.
勿客气。
The snake curls up.
蛇盘成一团。
How did the printing come out?
这种印刷结果怎样？