| 释义 |
electromagnet
\ ̷ ̷| ̷ ̷ ̷ ̷ at electro-+\ noun
Etymology: electr- + magnet
: a core of magnetic material (as soft iron) that is surrounded wholly or in part by a coil of wire, that is magnetized when an electric current is passed through the wire, and that retains its power of attraction only while the current is flowing |