“磁体”造句

两个磁体的N极和S极互相吸引.
The N pole and S pole of two magnets will attract each other.

为了做成电磁体你需要对金属线送电.
To make an electromagnet you need to send a current through the wire.

棒形或马蹄形磁体称为永磁体.
A bar on horseshoe magnet is called a permanent magnet.

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