英文關鍵字
ampere
caucasian
check
circuit
closeup
commissioning
connect
current
device
digital
diode
display
electric
electrical
electrician
electricity
electronic
electronics
engineer
engineering
equipment
hand
indication
industrial
industry
inspection
instrument
job
maintenance
measure
measurement
meter
multimeter
profession
rectifier
resistance
resistor
special
station
technical
technician
technology
test
tester
tool
use
work
workshop