英文關鍵字
analyzer
analyzing
button
circuit
computer
control
counter
data
device
digital
display
electric
electrical
electricity
electronic
electronics
engineering
equipment
experiment
frequency
industrial
industry
instrument
lab
laboratory
measure
measurement
measuring
meter
mixing
modern
monitor
panel
power
professional
radio
research
science
scientific
screen
signal
spectrum
technology
test
tool
universal
voltage
wave
waveform
work