Pfm
abbr. power factor meter 功率因数计
🗣️ 情景例句
You look bothered. Is there something I can help you with?
看你好像有点烦恼，有什么我可以帮忙吗？
It's a bit too hard.
这有点太难了吧。
The village is on a river.
它靠近一条小河。