Megaperm
镍锰铁高导磁率合金
🗣️ 情景例句
When will she come back?
她什么时候会回来？
Will you please measure this window to see how wide it is?
请您测量这扇窗户看它有多宽？
In the middle of the night, two boys woke up and began shouting.
午夜前后，有两个孩子醒了，大声叫了起来。