Communtator compound
[建] 用于换向器或整流器的润滑剂
🧩 词语组成解析
[建] 换向器, 整流器, 整流子
🗣️ 情景例句
There are so many things to consider.
是有许多事情要考虑。
I don't know what time it is.
我不知道现在几点钟。
There are some armchairs in the room.
客厅里有几把扶手椅。