Megaperm
镍锰铁高导磁率合金
🗣️ 情景例句
In my opinion, winter in Beijing is not very cold.
我觉得北京的冬天不是特别冷。
What do you think of my children?
你认为我的孩子怎么样？
The site chosen was an island at the entrance of New York Harbour.
场地选在了纽约港入口处的一个鸟上。