英文關鍵字
alpha
audio
bass
butterfly
channel
communication
cool
dance
digital
electricity
electronic
electronics
equalizer
equipment
global
graphic
guitar
looking
meter
mixing
music
oscilloscope
party
pattern
physics
power
radar
receiver
recording
software
sound
spectrum
studio
transceiver
transistor
treble
variation
voltmeter
volume
wave
waveform