Megaperm
镍锰铁高导磁率合金
🗣️ 情景例句
Yes, I remember. You were a great help.
是的， 我记得。你帮了个大忙。
Sorry. Were you trying to sleep?
对不起。你想睡觉吗？
Yes.He must remain in bed for another two days.
是的，他还必须卧床两天。