英文關鍵字
calibration
changing
chip
circuit
closeup
computer
device
digital
display
electrical
engineer
equipment
frequency
graphic
graticule
hitech
industry
instrument
instrumentation
lab
laboratory
measure
meter
microchips
mode
monitor
multimeter
nobody
object
offset
oscillogram
oscillograph
oscilloscope
power
sample
science
screen
setting
signal
spectrum
supply
technician
technology
test
time
tool
wave
zoom