英文關鍵字
ampere
amplifier
audio
background
broadcast
closeup
club
compressor
control
dashboard
decibel
device
dial
disco
display
electric
electrical
electricity
electronics
element
entertainment
equalizer
equipment
hifi
illumination
indicator
interface
knob
loud
macro
maximum
measure
meter
music
panel
power
radio
retro
signal
sound
speech
stereo
studio
unit
vintage
volume
wave