Cascade impactor
[化] 阶式碰撞取样器
🧩 词语组成解析
n. 撞击器；悬浮微粒的取样器
🗣️ 情景例句
The Post Office aims to improve its quality of service.
邮局锐意改善服务质量。
What are you doing?
你在干什么？
How much cloth does it take to make a skirt for the girl?
女孩做一条裙子要用多少布？