| 释义 |
扬声器yángshēngqì把电能变成声音的器件,常见的一种是由磁铁、线圈、纸盆等构成的,电流通过线圈时使纸盆作相应的振动而发出声音。用在收音机和扩音机上。{loudspeaker; device installed in a radio or amplifier to convert electric signals to audible sound. A common type consists of a permanent magnet, a voice coil and a cone-shaped diaphragm, and when the current flows through the voice coil, the diaphragm vibrates to produce sound waves.} |