Demonstration unit
[化] 示范装置
🧩 词语组成解析
unit
['ju:nit]
n. 单位，单元;装置;个体;[数]单位数;
🗣️ 情景例句
She worried constantly.
她经常烦恼。
Banking is such a boring business; I believe I'll take a short snooze.
警卫银行是桩枯燥的差事，且打个盹吧。
The meeting was scheduled for two hours, but it is not over yet.
会议原定了两个小时，不过现在还没有结束。