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
I can never get ahead at my job.
我总是不能出人头地。
If you cannot bite, never show your teeth.
不能打仗，切莫出兵。
and shows no signs at present of ceasing to rise.
并且目前尚无停止上升的迹象，