主题：[灌水]动圈式与电磁铁扬声器的区别

1. Electrodynamic (moving-coil) loudspeaker

--loudspeaker, the diaphragm of which is driven by a mechanical force that occurs when current flows through an electric conductor placed in a magnetic field.

2. Electromagnetic (moving-iron) loudspeaker

--loudspeaker, the diaphragm of which is driven by a magnetic force applied to a movable part of a ferromagnetic substance.