| 释义 |
magnetic field  nounA region around a magnetic material or a moving electric charge within which the force of magnetism acts.Electrons produce a small magnetic field as they spin and orbit the nucleus of an atom....- Sunspots are whirling masses of electrically charged gas formed by magnetic fields deep within the Sun.
- Similarly, if you move a magnet near a wire, the magnetic field will cause electrons in the wire to move.
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