Superconducting magnet:
A superconducting magnet is an electromagnet made from coils of superconducting wire.
en.wikipedia.org
超导磁铁:
超导磁体是一种电磁铁，它由超导导线构成，能产生令人生畏的巨大磁场。
zh.wikipedia.org
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Superconducting magnet超导磁铁