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
Is there anyone present who can show
在座可有人能提出
You'll be there in plenty of time.
你可以很方便地到达那里。
It would never again be possible for them to lead normal lives.
他们再也无法过正常的生活。