Hetu
abbr. Height Equivalent to Transfer Unit 当量传质单元高度
🗣️ 情景例句
While it may be cold outside, it's always warm here in the office.
外面可能很冷的时候，办公室里面总是很暖和。
I'm listen to the music downstairs.
我在楼下听音乐。
When did you have in mind?
你想什么时候呢？